CVE-2022-48839 (GCVE-0-2022-48839)
Vulnerability from cvelistv5 – Published: 2024-07-16 12:25 – Updated: 2026-08-05 08:52
VLAI
EPSS
VEX
Title
net/packet: fix slab-out-of-bounds access in packet_recvmsg()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/packet: fix slab-out-of-bounds access in packet_recvmsg()
syzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH
and mmap operations, tpacket_rcv() is queueing skbs with
garbage in skb->cb[], triggering a too big copy [1]
Presumably, users of af_packet using mmap() already gets correct
metadata from the mapped buffer, we can simply make sure
to clear 12 bytes that might be copied to user space later.
BUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]
BUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489
Write of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631
CPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:459
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
memcpy+0x39/0x60 mm/kasan/shadow.c:66
memcpy include/linux/fortify-string.h:225 [inline]
packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489
sock_recvmsg_nosec net/socket.c:948 [inline]
sock_recvmsg net/socket.c:966 [inline]
sock_recvmsg net/socket.c:962 [inline]
____sys_recvmsg+0x2c4/0x600 net/socket.c:2632
___sys_recvmsg+0x127/0x200 net/socket.c:2674
__sys_recvmsg+0xe2/0x1a0 net/socket.c:2704
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fdfd5954c29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29
RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005
RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60
R13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54
</TASK>
addr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:
____sys_recvmsg+0x0/0x600 include/linux/uio.h:246
this frame has 1 object:
[32, 160) 'addr'
Memory state around the buggy address:
ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00
ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
>ffffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3
^
ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00
==================================================================
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:57 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
0fb375fb9b93b7d822debc6a734052337ccfdb1f , < b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0
(git)
Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < b1e27cda1e3c12b705875bb7e247a97168580e33 (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < a33dd1e6693f80d805155b3f69c18c2f642915da (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < 268dcf1f7b3193bc446ec3d14e08a240e9561e4d (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < 70b7b3c055fd4a464da8da55ff4c1f84269f9b02 (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < a055f5f2841f7522b44a2b1eccb1951b4b03d51a (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < ef591b35176029fdefea38e8388ffa371e18f4b2 (git) Affected: 0fb375fb9b93b7d822debc6a734052337ccfdb1f , < c700525fcc06b05adfea78039de02628af79e07a (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.14
Unaffected: 0 , < 2.6.14 (semver) Unaffected: 4.9.308 , ≤ 4.9.* (semver) Unaffected: 4.14.273 , ≤ 4.14.* (semver) Unaffected: 4.19.236 , ≤ 4.19.* (semver) Unaffected: 5.4.187 , ≤ 5.4.* (semver) Unaffected: 5.10.108 , ≤ 5.10.* (semver) Unaffected: 5.15.31 , ≤ 5.15.* (semver) Unaffected: 5.16.17 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\n\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\nand mmap operations, tpacket_rcv() is queueing skbs with\ngarbage in skb-\u003ecb[], triggering a too big copy [1]\n\nPresumably, users of af_packet using mmap() already gets correct\nmetadata from the mapped buffer, we can simply make sure\nto clear 12 bytes that might be copied to user space later.\n\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\n\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\n __kasan_report mm/kasan/report.c:442 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\n check_region_inline mm/kasan/generic.c:183 [inline]\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\n memcpy include/linux/fortify-string.h:225 [inline]\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\n sock_recvmsg_nosec net/socket.c:948 [inline]\n sock_recvmsg net/socket.c:966 [inline]\n sock_recvmsg net/socket.c:962 [inline]\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fdfd5954c29\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\n \u003c/TASK\u003e\n\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\n\nthis frame has 1 object:\n [32, 160) \u0027addr\u0027\n\nMemory state around the buggy address:\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\n\u003effffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\n ^\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\n=================================================================="
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"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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{
"lang": "en",
"value": "AV:L - Exploitation requires a local AF_PACKET socket configured with PACKET_RX_RING (mmap) and PACKET_COPY_THRESH, then a local recvmsg/recvfrom; a remote packet alone cannot reach packet_recvmsg without that local setup.\nAC:L - The attacker fully controls socket options, ring geometry, oversized-packet delivery (e.g. in their own netns), and the recvmsg that uses the bogus sll_halen; no race or victim-controlled precondition is required.\nPR:L - packet_create() only checks ns_capable(net-\u003euser_ns, CAP_NET_RAW), which an unprivileged user obtains via user+network namespaces (unshare -Urn), matching established AF_PACKET scoring.\nUI:N - The attacker performs socket setup, packet injection, and recvmsg entirely themselves; no separate victim action is required.\nS:U - Impact is kernel stack/heap memory corruption and local privilege escalation within the same host kernel authority, not a VM/IOMMU/sandbox boundary escape.\nC:H - Oversized memcpy from PACKET_SKB_CB (skb-\u003ecb) reads past the intended sockaddr into other sk_buff fields/adjacent memory and copies that data toward userspace via msg_name, yielding a high-impact kernel disclosure primitive.\nI:H - The same path performs a kernel stack out-of-bounds write past sockaddr_storage in ____sys_recvmsg (observed write of size 165), which is an exploitable corruption primitive for control-flow hijacking.\nA:H - The stack smash and subsequent move_addr_to_user BUG_ON(klen \u003e sizeof(sockaddr_storage)) cause kernel oops/panic, so availability impact is complete host crash."
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},
"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.14\", \"versionEndExcluding\": \"4.9.308\", \"matchCriteriaId\": \"661D636E-06A1-4E3D-A282-F625B52C2A61\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.10\", \"versionEndExcluding\": \"4.14.273\", \"matchCriteriaId\": \"A1E9CE4F-B0EA-4F88-9562-4F113E598085\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.15\", \"versionEndExcluding\": \"4.19.236\", \"matchCriteriaId\": \"09979837-E01F-4E28-B943-9F680CA3D278\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.187\", \"matchCriteriaId\": \"D9FFB805-4ED2-4FAE-9EF4-8AB4BC9D8F5C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.108\", \"matchCriteriaId\": \"24925527-AC4A-4594-8D6C-3B34D31862C5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.31\", \"matchCriteriaId\": \"F25C317E-A673-47D1-844E-171C9BFDF352\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"5.16.17\", \"matchCriteriaId\": \"DC9A634D-C617-4F8C-ADEF-AF94CE69D687\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\\n\\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\\nand mmap operations, tpacket_rcv() is queueing skbs with\\ngarbage in skb-\u003ecb[], triggering a too big copy [1]\\n\\nPresumably, users of af_packet using mmap() already gets correct\\nmetadata from the mapped buffer, we can simply make sure\\nto clear 12 bytes that might be copied to user space later.\\n\\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\\n\\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\\n __kasan_report mm/kasan/report.c:442 [inline]\\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\\n check_region_inline mm/kasan/generic.c:183 [inline]\\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\\n memcpy include/linux/fortify-string.h:225 [inline]\\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\n sock_recvmsg_nosec net/socket.c:948 [inline]\\n sock_recvmsg net/socket.c:966 [inline]\\n sock_recvmsg net/socket.c:962 [inline]\\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7fdfd5954c29\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\\n \u003c/TASK\u003e\\n\\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\\n\\nthis frame has 1 object:\\n [32, 160) \u0027addr\u0027\\n\\nMemory state around the buggy address:\\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\\n\u003effffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\\n ^\\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\\n==================================================================\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/packet: corrige el acceso slab-out-of-bounds en paquete_recvmsg() syzbot descubri\\u00f3 que cuando un socket AF_PACKET utiliza operaciones PACKET_COPY_THRESH y mmap, tpacket_rcv() est\\u00e1 poniendo en cola skbs con basura en skb-\u0026gt;cb[], lo que desencadena una copia demasiado grande [1] Presumiblemente, los usuarios de af_packet que usan mmap() ya obtienen los metadatos correctos del b\\u00fafer asignado, simplemente podemos asegurarnos de borrar 12 bytes que podr\\u00edan copiarse al usuario espacio m\\u00e1s tarde. ERROR: KASAN: pila fuera de los l\\u00edmites en memcpy include/linux/fortify-string.h:225 [en l\\u00ednea] ERROR: KASAN: pila fuera de los l\\u00edmites en paquete_recvmsg+0x56c/0x1150 net/packet/af_packet. c:3489 Escritura de tama\\u00f1o 165 en la direcci\\u00f3n ffffc9000385fb78 por tarea syz-executor233/3631 CPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0 Nombre de hardware: Google Google Compute Engine /Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xf /0x336 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [en l\\u00ednea] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [en l\\u00ednea] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x39/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:225 [en l\\u00ednea] paquete_recvmsg+0x56c/ 0x1150 net/packet/af_packet.c:3489 sock_recvmsg_nosec net/socket.c:948 [en l\\u00ednea] sock_recvmsg net/socket.c:966 [en l\\u00ednea] sock_recvmsg net/socket.c:962 [en l\\u00ednea] ____sys_recvmsg+0x2c4/0x600 net/ socket.c:2632 ___sys_recvmsg+0x127/0x200 net/socket.c:2674 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704 do_syscall_x64 arch/x86/entry/common.c:50 [en l\\u00ednea] arco xb0 /x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fdfd5954c29 C\\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcf8e71e48 EFLAGS: 0000246 ORIG_RAX: 000000000000002f RAX : ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 000000000000005 RBP: 0000000 000000000 R08: 000000000000000d R09: 000000000000000d R10: 0000000000000000 R11: 00000000000000246 R12: 00007ffcf8e71e60 R13: 0000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54 direcci\\u00f3n ffffc9000385fb78 est\\u00e1 ubicado en la pila de la tarea syz-executor233/3631 en el desplazamiento 32 en el marco: ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246 este marco tiene 1 objeto: [32, 160) \u0027addr\u0027 Estado de memoria alrededor del buggy direcci\\u00f3n: ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 c9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3 ^ ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1 ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 0 0 00 00 00 00 ====== ==================================================== ==========\"}]",
"id": "CVE-2022-48839",
"lastModified": "2024-11-21T07:34:11.183",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
"published": "2024-07-16T13:15:11.353",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\"]}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-125\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2022-48839\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T13:15:11.353\",\"lastModified\":\"2026-08-04T10:17:23.723\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\\n\\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\\nand mmap operations, tpacket_rcv() is queueing skbs with\\ngarbage in skb-\u003ecb[], triggering a too big copy [1]\\n\\nPresumably, users of af_packet using mmap() already gets correct\\nmetadata from the mapped buffer, we can simply make sure\\nto clear 12 bytes that might be copied to user space later.\\n\\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\\n\\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\\n __kasan_report mm/kasan/report.c:442 [inline]\\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\\n check_region_inline mm/kasan/generic.c:183 [inline]\\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\\n memcpy include/linux/fortify-string.h:225 [inline]\\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\n sock_recvmsg_nosec net/socket.c:948 [inline]\\n sock_recvmsg net/socket.c:966 [inline]\\n sock_recvmsg net/socket.c:962 [inline]\\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7fdfd5954c29\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\\n \u003c/TASK\u003e\\n\\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\\n\\nthis frame has 1 object:\\n [32, 160) \u0027addr\u0027\\n\\nMemory state around the buggy address:\\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\\n\u003effffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\\n ^\\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\\n==================================================================\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/packet: corrige el acceso slab-out-of-bounds en paquete_recvmsg() syzbot descubri\u00f3 que cuando un socket AF_PACKET utiliza operaciones PACKET_COPY_THRESH y mmap, tpacket_rcv() est\u00e1 poniendo en cola skbs con basura en skb-\u0026gt;cb[], lo que desencadena una copia demasiado grande [1] Presumiblemente, los usuarios de af_packet que usan mmap() ya obtienen los metadatos correctos del b\u00fafer asignado, simplemente podemos asegurarnos de borrar 12 bytes que podr\u00edan copiarse al usuario espacio m\u00e1s tarde. ERROR: KASAN: pila fuera de los l\u00edmites en memcpy include/linux/fortify-string.h:225 [en l\u00ednea] ERROR: KASAN: pila fuera de los l\u00edmites en paquete_recvmsg+0x56c/0x1150 net/packet/af_packet. c:3489 Escritura de tama\u00f1o 165 en la direcci\u00f3n ffffc9000385fb78 por tarea syz-executor233/3631 CPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0 Nombre de hardware: Google Google Compute Engine /Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xf /0x336 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [en l\u00ednea] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [en l\u00ednea] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x39/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:225 [en l\u00ednea] paquete_recvmsg+0x56c/ 0x1150 net/packet/af_packet.c:3489 sock_recvmsg_nosec net/socket.c:948 [en l\u00ednea] sock_recvmsg net/socket.c:966 [en l\u00ednea] sock_recvmsg net/socket.c:962 [en l\u00ednea] ____sys_recvmsg+0x2c4/0x600 net/ socket.c:2632 ___sys_recvmsg+0x127/0x200 net/socket.c:2674 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] arco xb0 /x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fdfd5954c29 C\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcf8e71e48 EFLAGS: 0000246 ORIG_RAX: 000000000000002f RAX : ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 000000000000005 RBP: 0000000 000000000 R08: 000000000000000d R09: 000000000000000d R10: 0000000000000000 R11: 00000000000000246 R12: 00007ffcf8e71e60 R13: 0000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54 direcci\u00f3n ffffc9000385fb78 est\u00e1 ubicado en la pila de la tarea syz-executor233/3631 en el desplazamiento 32 en el marco: ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246 este marco tiene 1 objeto: [32, 160) \u0027addr\u0027 Estado de memoria alrededor del buggy direcci\u00f3n: ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 c9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3 ^ ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1 ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 0 0 00 00 00 00 ====== ==================================================== 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:48:09+00:00",
"cve": "CVE-2022-48839",
"id": "CVE-2022-48839",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net/packet: fix slab-out-of-bounds access in packet_recvmsg()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48839.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T16:56:16Z",
"cve": "CVE-2022-48839",
"id": "CVE-2022-48839",
"initial_release_date": "2024-07-18T03:05:48Z",
"product_status:known_not_affected": "187",
"product_status:recommended": "568",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-48839",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48839.json",
"version": "55"
},
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authority, not a VM/IOMMU/sandbox boundary escape.\\nC:H - Oversized memcpy from PACKET_SKB_CB (skb-\u003ecb) reads past the intended sockaddr into other sk_buff fields/adjacent memory and copies that data toward userspace via msg_name, yielding a high-impact kernel disclosure primitive.\\nI:H - The same path performs a kernel stack out-of-bounds write past sockaddr_storage in ____sys_recvmsg (observed write of size 165), which is an exploitable corruption primitive for control-flow hijacking.\\nA:H - The stack smash and subsequent move_addr_to_user BUG_ON(klen \u003e sizeof(sockaddr_storage)) cause kernel oops/panic, so availability impact is complete host crash.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0fb375fb9b93b7d822debc6a734052337ccfdb1f\", \"lessThan\": \"b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0\", \"versionType\": 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\"unaffected\", \"version\": \"5.4.187\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.108\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.31\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.17\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/packet/af_packet.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0\"}, {\"url\": \"https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33\"}, {\"url\": \"https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da\"}, {\"url\": \"https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d\"}, {\"url\": \"https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02\"}, {\"url\": \"https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a\"}, {\"url\": \"https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2\"}, {\"url\": \"https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\\n\\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\\nand mmap operations, tpacket_rcv() is queueing skbs with\\ngarbage in skb-\u003ecb[], triggering a too big copy [1]\\n\\nPresumably, users of af_packet using mmap() already gets correct\\nmetadata from the mapped buffer, we can simply make sure\\nto clear 12 bytes that might be copied to user space later.\\n\\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\\n\\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\\n __kasan_report mm/kasan/report.c:442 [inline]\\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\\n check_region_inline mm/kasan/generic.c:183 [inline]\\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\\n memcpy include/linux/fortify-string.h:225 [inline]\\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\\n sock_recvmsg_nosec net/socket.c:948 [inline]\\n sock_recvmsg net/socket.c:966 [inline]\\n sock_recvmsg net/socket.c:962 [inline]\\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7fdfd5954c29\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\\n \u003c/TASK\u003e\\n\\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\\n\\nthis frame has 1 object:\\n [32, 160) \u0027addr\u0027\\n\\nMemory state around the buggy address:\\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\\n\u003effffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\\n ^\\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\\n==================================================================\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.308\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.273\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.236\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.187\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.108\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.31\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.17\", \"versionStartIncluding\": \"2.6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"2.6.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:52:36.447Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-48839\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:52:36.447Z\", \"dateReserved\": \"2024-07-16T11:38:08.909Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T12:25:10.521Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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