CVE-2024-26733 (GCVE-0-2024-26733)

Vulnerability from cvelistv5 – Published: 2024-04-03 17:00 – Updated: 2026-05-11 20:03
VLAI?
Title
arp: Prevent overflow in arp_req_get().
Summary
In the Linux kernel, the following vulnerability has been resolved: arp: Prevent overflow in arp_req_get(). syzkaller reported an overflown write in arp_req_get(). [0] When ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour entry and copies neigh->ha to struct arpreq.arp_ha.sa_data. The arp_ha here is struct sockaddr, not struct sockaddr_storage, so the sa_data buffer is just 14 bytes. In the splat below, 2 bytes are overflown to the next int field, arp_flags. We initialise the field just after the memcpy(), so it's not a problem. However, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN), arp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL) in arp_ioctl() before calling arp_req_get(). To avoid the overflow, let's limit the max length of memcpy(). Note that commit b5f0de6df6dc ("net: dev: Convert sa_data to flexible array in struct sockaddr") just silenced syzkaller. [0]: memcpy: detected field-spanning write (size 16) of single field "r->arp_ha.sa_data" at net/ipv4/arp.c:1128 (size 14) WARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 Modules linked in: CPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014 RIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 Code: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6 RSP: 0018:ffffc900050b7998 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001 RBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000 R13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010 FS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261 inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981 sock_do_ioctl+0xdf/0x260 net/socket.c:1204 sock_ioctl+0x3ef/0x650 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x64/0xce RIP: 0033:0x7f172b262b8d Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d RDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003 RBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000 </TASK>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 97eaa2955db4120ce6ec2ef123e860bc32232c50 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f119f2325ba70cbfdec701000dcad4d88805d5b0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a3f2c083cb575d80a7627baf3339e78fedccbb91 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a7d6027790acea24446ddd6632d394096c0f4667 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.211 , ≤ 5.10.* (semver)
Unaffected: 5.15.150 , ≤ 5.15.* (semver)
Unaffected: 6.1.80 , ≤ 6.1.* (semver)
Unaffected: 6.6.19 , ≤ 6.6.* (semver)
Unaffected: 6.7.7 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narp: Prevent overflow in arp_req_get().\n\nsyzkaller reported an overflown write in arp_req_get(). [0]\n\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\nentry and copies neigh-\u003eha to struct arpreq.arp_ha.sa_data.\n\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\nthe sa_data buffer is just 14 bytes.\n\nIn the splat below, 2 bytes are overflown to the next int field,\narp_flags.  We initialise the field just after the memcpy(), so it\u0027s\nnot a problem.\n\nHowever, when dev-\u003eaddr_len is greater than 22 (e.g. MAX_ADDR_LEN),\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\nin arp_ioctl() before calling arp_req_get().\n\nTo avoid the overflow, let\u0027s limit the max length of memcpy().\n\nNote that commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible\narray in struct sockaddr\") just silenced syzkaller.\n\n[0]:\nmemcpy: detected field-spanning write (size 16) of single field \"r-\u003earp_ha.sa_data\" at net/ipv4/arp.c:1128 (size 14)\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nModules linked in:\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u003c0f\u003e 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\nFS:  00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:870 [inline]\n __se_sys_ioctl fs/ioctl.c:856 [inline]\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x64/0xce\nRIP: 0033:0x7f172b262b8d\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\n \u003c/TASK\u003e"
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    "cveId": "CVE-2024-26733",
    "datePublished": "2024-04-03T17:00:20.437Z",
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    "dateUpdated": "2026-05-11T20:03:05.779Z",
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      "date": "2026-05-20",
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    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\narp: Prevent overflow in arp_req_get().\\n\\nsyzkaller reported an overflown write in arp_req_get(). [0]\\n\\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\\nentry and copies neigh-\u003eha to struct arpreq.arp_ha.sa_data.\\n\\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\\nthe sa_data buffer is just 14 bytes.\\n\\nIn the splat below, 2 bytes are overflown to the next int field,\\narp_flags.  We initialise the field just after the memcpy(), so it\u0027s\\nnot a problem.\\n\\nHowever, when dev-\u003eaddr_len is greater than 22 (e.g. MAX_ADDR_LEN),\\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\\nin arp_ioctl() before calling arp_req_get().\\n\\nTo avoid the overflow, let\u0027s limit the max length of memcpy().\\n\\nNote that commit b5f0de6df6dc (\\\"net: dev: Convert sa_data to flexible\\narray in struct sockaddr\\\") just silenced syzkaller.\\n\\n[0]:\\nmemcpy: detected field-spanning write (size 16) of single field \\\"r-\u003earp_ha.sa_data\\\" at net/ipv4/arp.c:1128 (size 14)\\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nModules linked in:\\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u003c0f\u003e 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\\nFS:  00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:870 [inline]\\n __se_sys_ioctl fs/ioctl.c:856 [inline]\\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\\n entry_SYSCALL_64_after_hwframe+0x64/0xce\\nRIP: 0033:0x7f172b262b8d\\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\\n \u003c/TASK\u003e\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: arp: Evita el desbordamiento en arp_req_get(). syzkaller inform\\u00f3 una escritura desbordada en arp_req_get(). [0] Cuando se emite ioctl(SIOCGARP), arp_req_get() busca una entrada vecina y copia neigh-\u0026gt;ha para estructurar arpreq.arp_ha.sa_data. El arp_ha aqu\\u00ed es struct sockaddr, no struct sockaddr_storage, por lo que el b\\u00fafer sa_data tiene solo 14 bytes. En el siguiente s\\u00edmbolo, se desbordan 2 bytes al siguiente campo int, arp_flags. Inicializamos el campo justo despu\\u00e9s de memcpy(), por lo que no es un problema. Sin embargo, cuando dev-\u0026gt;addr_len es mayor que 22 (por ejemplo, MAX_ADDR_LEN), se sobrescribe arp_netmask, que podr\\u00eda configurarse como htonl(0xFFFFFFFFUL) en arp_ioctl() antes de llamar a arp_req_get(). Para evitar el desbordamiento, limitemos la longitud m\\u00e1xima de memcpy(). Tenga en cuenta que el commit b5f0de6df6dc (\\\"net: dev: Convert sa_data to flexible array in struct sockaddr\\\") simplemente silenci\\u00f3 a syzkaller. [0]: memcpy: escritura detectada en todos los campos (tama\\u00f1o 16) de un solo campo \\\"r-\u0026gt;arp_ha.sa_data\\\" en net/ipv4/arp.c:1128 (tama\\u00f1o 14) ADVERTENCIA: CPU: 0 PID: 144638 en net /ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 M\\u00f3dulos vinculados en: CPU: 0 PID: 144638 Comm: syz-executor.4 No contaminado 6.1.74 #31 Nombre de hardware: QEMU PC est\\u00e1ndar (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 01/04/2014 RIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 C\\u00f3digo: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u0026lt;0f\u0026gt; 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6 RSP: 0018:ffffc900050b7998 EFLAGS: 00010286 RAX: 00000000000000000 RBX: ffff88803a815000 RCX: 0000000000000 000 RDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001 RBP: ffffc900050b7a98 R08: 00000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000 R13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010 FS: 0000 7f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4 : 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 000000 0000000400 PKRU: 55555554 Seguimiento de llamadas:  arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261 inet_ioctl+0x314/0x3a0 net/ ipv4/af_inet.c:981 sock_do_ioctl+0xdf/0x260 net/socket.c:1204 sock_ioctl+0x3ef/0x650 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [en l\\u00ednea] __do_sys_ioctl fs/ioctl.c:870 [en l\\u00ednea] __se_sys_ioctl fs/ioctl.c:856 [en l\\u00ednea] __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [en l\\u00ednea] do_syscall_64+0x37/0x90 arch/x86/ entrada/common.c:81 entrada_SYSCALL_64_after_hwframe+0x64/0xce RIP: 0033:0x7f172b262b8d C\\u00f3digo: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f172bf300b8 EFLAGS: 0000024 6 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX : 00007f172b3abf80 RCX: 00007f172b262b8d RDX: 0000000020000000 RSI: 0000000000008954 RDI: 00000000000000003 RBP: 00007f172b2d3493 R08: 0 000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000000000 R13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000 \"}]",
      "id": "CVE-2024-26733",
      "lastModified": "2024-11-21T09:02:56.620",
      "published": "2024-04-03T17:15:51.040",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20241101-0013/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26733\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T17:15:51.040\",\"lastModified\":\"2025-03-17T16:02:47.887\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\narp: Prevent overflow in arp_req_get().\\n\\nsyzkaller reported an overflown write in arp_req_get(). [0]\\n\\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\\nentry and copies neigh-\u003eha to struct arpreq.arp_ha.sa_data.\\n\\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\\nthe sa_data buffer is just 14 bytes.\\n\\nIn the splat below, 2 bytes are overflown to the next int field,\\narp_flags.  We initialise the field just after the memcpy(), so it\u0027s\\nnot a problem.\\n\\nHowever, when dev-\u003eaddr_len is greater than 22 (e.g. MAX_ADDR_LEN),\\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\\nin arp_ioctl() before calling arp_req_get().\\n\\nTo avoid the overflow, let\u0027s limit the max length of memcpy().\\n\\nNote that commit b5f0de6df6dc (\\\"net: dev: Convert sa_data to flexible\\narray in struct sockaddr\\\") just silenced syzkaller.\\n\\n[0]:\\nmemcpy: detected field-spanning write (size 16) of single field \\\"r-\u003earp_ha.sa_data\\\" at net/ipv4/arp.c:1128 (size 14)\\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nModules linked in:\\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u003c0f\u003e 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\\nFS:  00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:870 [inline]\\n __se_sys_ioctl fs/ioctl.c:856 [inline]\\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\\n entry_SYSCALL_64_after_hwframe+0x64/0xce\\nRIP: 0033:0x7f172b262b8d\\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\\n \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: arp: Evita el desbordamiento en arp_req_get(). syzkaller inform\u00f3 una escritura desbordada en arp_req_get(). [0] Cuando se emite ioctl(SIOCGARP), arp_req_get() busca una entrada vecina y copia neigh-\u0026gt;ha para estructurar arpreq.arp_ha.sa_data. El arp_ha aqu\u00ed es struct sockaddr, no struct sockaddr_storage, por lo que el b\u00fafer sa_data tiene solo 14 bytes. En el siguiente s\u00edmbolo, se desbordan 2 bytes al siguiente campo int, arp_flags. Inicializamos el campo justo despu\u00e9s de memcpy(), por lo que no es un problema. Sin embargo, cuando dev-\u0026gt;addr_len es mayor que 22 (por ejemplo, MAX_ADDR_LEN), se sobrescribe arp_netmask, que podr\u00eda configurarse como htonl(0xFFFFFFFFUL) en arp_ioctl() antes de llamar a arp_req_get(). Para evitar el desbordamiento, limitemos la longitud m\u00e1xima de memcpy(). Tenga en cuenta que el commit b5f0de6df6dc (\\\"net: dev: Convert sa_data to flexible array in struct sockaddr\\\") simplemente silenci\u00f3 a syzkaller. [0]: memcpy: escritura detectada en todos los campos (tama\u00f1o 16) de un solo campo \\\"r-\u0026gt;arp_ha.sa_data\\\" en net/ipv4/arp.c:1128 (tama\u00f1o 14) ADVERTENCIA: CPU: 0 PID: 144638 en net /ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 M\u00f3dulos vinculados en: CPU: 0 PID: 144638 Comm: syz-executor.4 No contaminado 6.1.74 #31 Nombre de hardware: QEMU PC est\u00e1ndar (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 01/04/2014 RIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 C\u00f3digo: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u0026lt;0f\u0026gt; 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6 RSP: 0018:ffffc900050b7998 EFLAGS: 00010286 RAX: 00000000000000000 RBX: ffff88803a815000 RCX: 0000000000000 000 RDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001 RBP: ffffc900050b7a98 R08: 00000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000 R13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010 FS: 0000 7f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4 : 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 000000 0000000400 PKRU: 55555554 Seguimiento de llamadas:  arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261 inet_ioctl+0x314/0x3a0 net/ ipv4/af_inet.c:981 sock_do_ioctl+0xdf/0x260 net/socket.c:1204 sock_ioctl+0x3ef/0x650 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:870 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:856 [en l\u00ednea] __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [en l\u00ednea] do_syscall_64+0x37/0x90 arch/x86/ entrada/common.c:81 entrada_SYSCALL_64_after_hwframe+0x64/0xce RIP: 0033:0x7f172b262b8d C\u00f3digo: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f172bf300b8 EFLAGS: 0000024 6 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX : 00007f172b3abf80 RCX: 00007f172b262b8d RDX: 0000000020000000 RSI: 0000000000008954 RDI: 00000000000000003 RBP: 00007f172b2d3493 R08: 0 000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000000000 R13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000 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[0]\\n\\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\\nentry and copies neigh-\u003eha to struct arpreq.arp_ha.sa_data.\\n\\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\\nthe sa_data buffer is just 14 bytes.\\n\\nIn the splat below, 2 bytes are overflown to the next int field,\\narp_flags.  We initialise the field just after the memcpy(), so it\u0027s\\nnot a problem.\\n\\nHowever, when dev-\u003eaddr_len is greater than 22 (e.g. MAX_ADDR_LEN),\\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\\nin arp_ioctl() before calling arp_req_get().\\n\\nTo avoid the overflow, let\u0027s limit the max length of memcpy().\\n\\nNote that commit b5f0de6df6dc (\\\"net: dev: Convert sa_data to flexible\\narray in struct sockaddr\\\") just silenced syzkaller.\\n\\n[0]:\\nmemcpy: detected field-spanning write (size 16) of single field \\\"r-\u003earp_ha.sa_data\\\" at net/ipv4/arp.c:1128 (size 14)\\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nModules linked in:\\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb \u003c0f\u003e 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\\nFS:  00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:870 [inline]\\n __se_sys_ioctl fs/ioctl.c:856 [inline]\\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\\n entry_SYSCALL_64_after_hwframe+0x64/0xce\\nRIP: 0033:0x7f172b262b8d\\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 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 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\\n \u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.211\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.150\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.80\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.19\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.7\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:03:05.779Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26733\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:03:05.779Z\", \"dateReserved\": \"2024-02-19T14:20:24.165Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T17:00:20.437Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.