CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9899 vulnerabilities reference this CWE, most recent first.
GHSA-XWVH-FXHH-3QRR
Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2025-01-14 18:31In the Linux kernel, the following vulnerability has been resolved:
net: sched: flower: protect fl_walk() with rcu
Patch that refactored fl_walk() to use idr_for_each_entry_continue_ul() also removed rcu protection of individual filters which causes following use-after-free when filter is deleted concurrently. Fix fl_walk() to obtain rcu read lock while iterating and taking the filter reference and temporary release the lock while calling arg->fn() callback that can sleep.
KASAN trace:
[ 352.773640] ================================================================== [ 352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower] [ 352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987
[ 352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2 [ 352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 352.781022] Call Trace: [ 352.781573] dump_stack_lvl+0x46/0x5a [ 352.782332] print_address_description.constprop.0+0x1f/0x140 [ 352.783400] ? fl_walk+0x159/0x240 [cls_flower] [ 352.784292] ? fl_walk+0x159/0x240 [cls_flower] [ 352.785138] kasan_report.cold+0x83/0xdf [ 352.785851] ? fl_walk+0x159/0x240 [cls_flower] [ 352.786587] kasan_check_range+0x145/0x1a0 [ 352.787337] fl_walk+0x159/0x240 [cls_flower] [ 352.788163] ? fl_put+0x10/0x10 [cls_flower] [ 352.789007] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.790102] tcf_chain_dump+0x231/0x450 [ 352.790878] ? tcf_chain_tp_delete_empty+0x170/0x170 [ 352.791833] ? __might_sleep+0x2e/0xc0 [ 352.792594] ? tfilter_notify+0x170/0x170 [ 352.793400] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.794477] tc_dump_tfilter+0x385/0x4b0 [ 352.795262] ? tc_new_tfilter+0x1180/0x1180 [ 352.796103] ? __mod_node_page_state+0x1f/0xc0 [ 352.796974] ? __build_skb_around+0x10e/0x130 [ 352.797826] netlink_dump+0x2c0/0x560 [ 352.798563] ? netlink_getsockopt+0x430/0x430 [ 352.799433] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220 [ 352.800542] __netlink_dump_start+0x356/0x440 [ 352.801397] rtnetlink_rcv_msg+0x3ff/0x550 [ 352.802190] ? tc_new_tfilter+0x1180/0x1180 [ 352.802872] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.803668] ? tc_new_tfilter+0x1180/0x1180 [ 352.804344] ? _copy_from_iter_nocache+0x800/0x800 [ 352.805202] ? kasan_set_track+0x1c/0x30 [ 352.805900] netlink_rcv_skb+0xc6/0x1f0 [ 352.806587] ? rht_deferred_worker+0x6b0/0x6b0 [ 352.807455] ? rtnl_calcit.isra.0+0x1f0/0x1f0 [ 352.808324] ? netlink_ack+0x4d0/0x4d0 [ 352.809086] ? netlink_deliver_tap+0x62/0x3d0 [ 352.809951] netlink_unicast+0x353/0x480 [ 352.810744] ? netlink_attachskb+0x430/0x430 [ 352.811586] ? __alloc_skb+0xd7/0x200 [ 352.812349] netlink_sendmsg+0x396/0x680 [ 352.813132] ? netlink_unicast+0x480/0x480 [ 352.813952] ? __import_iovec+0x192/0x210 [ 352.814759] ? netlink_unicast+0x480/0x480 [ 352.815580] sock_sendmsg+0x6c/0x80 [ 352.816299] _syssendmsg+0x3a5/0x3c0 [ 352.817096] ? kernel_sendmsg+0x30/0x30 [ 352.817873] ? ia32_sys_recvmmsg+0x150/0x150 [ 352.818753] syssendmsg+0xd8/0x140 [ 352.819518] ? sendmsg_copy_msghdr+0x110/0x110 [ 352.820402] ? _sys_recvmsg+0xf4/0x1a0 [ 352.821110] ? __copy_msghdr_from_user+0x260/0x260 [ 352.821934] ? _raw_spin_lock+0x81/0xd0 [ 352.822680] ? __handle_mm_fault+0xef3/0x1b20 [ 352.823549] ? rb_insert_color+0x2a/0x270 [ 352.824373] ? copy_page_range+0x16b0/0x16b0 [ 352.825209] ? perf_event_update_userpage+0x2d0/0x2d0 [ 352.826190] ? __fget_light+0xd9/0xf0 [ 352.826941] __sys_sendmsg+0xb3/0x130 [ 352.827613] ? __sys_sendmsg_sock+0x20/0x20 [ 352.828377] ? do_user_addr_fault+0x2c5/0x8a0 [ 352.829184] ? fpregs_assert_state_consistent+0x52/0x60 [ 352.830001] ? exit_to_user_mode_prepare+0x32/0x160 [ 352.830845] do_syscall_64+0x35/0x80 [ 352.831445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 352.832331] RIP: 0033:0x7f7bee973c17 [ ---truncated---
{
"affected": [],
"aliases": [
"CVE-2021-47402"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-21T15:15:25Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: flower: protect fl_walk() with rcu\n\nPatch that refactored fl_walk() to use idr_for_each_entry_continue_ul()\nalso removed rcu protection of individual filters which causes following\nuse-after-free when filter is deleted concurrently. Fix fl_walk() to obtain\nrcu read lock while iterating and taking the filter reference and temporary\nrelease the lock while calling arg-\u003efn() callback that can sleep.\n\nKASAN trace:\n\n[ 352.773640] ==================================================================\n[ 352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower]\n[ 352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987\n\n[ 352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2\n[ 352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[ 352.781022] Call Trace:\n[ 352.781573] dump_stack_lvl+0x46/0x5a\n[ 352.782332] print_address_description.constprop.0+0x1f/0x140\n[ 352.783400] ? fl_walk+0x159/0x240 [cls_flower]\n[ 352.784292] ? fl_walk+0x159/0x240 [cls_flower]\n[ 352.785138] kasan_report.cold+0x83/0xdf\n[ 352.785851] ? fl_walk+0x159/0x240 [cls_flower]\n[ 352.786587] kasan_check_range+0x145/0x1a0\n[ 352.787337] fl_walk+0x159/0x240 [cls_flower]\n[ 352.788163] ? fl_put+0x10/0x10 [cls_flower]\n[ 352.789007] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[ 352.790102] tcf_chain_dump+0x231/0x450\n[ 352.790878] ? tcf_chain_tp_delete_empty+0x170/0x170\n[ 352.791833] ? __might_sleep+0x2e/0xc0\n[ 352.792594] ? tfilter_notify+0x170/0x170\n[ 352.793400] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[ 352.794477] tc_dump_tfilter+0x385/0x4b0\n[ 352.795262] ? tc_new_tfilter+0x1180/0x1180\n[ 352.796103] ? __mod_node_page_state+0x1f/0xc0\n[ 352.796974] ? __build_skb_around+0x10e/0x130\n[ 352.797826] netlink_dump+0x2c0/0x560\n[ 352.798563] ? netlink_getsockopt+0x430/0x430\n[ 352.799433] ? __mutex_unlock_slowpath.constprop.0+0x220/0x220\n[ 352.800542] __netlink_dump_start+0x356/0x440\n[ 352.801397] rtnetlink_rcv_msg+0x3ff/0x550\n[ 352.802190] ? tc_new_tfilter+0x1180/0x1180\n[ 352.802872] ? rtnl_calcit.isra.0+0x1f0/0x1f0\n[ 352.803668] ? tc_new_tfilter+0x1180/0x1180\n[ 352.804344] ? _copy_from_iter_nocache+0x800/0x800\n[ 352.805202] ? kasan_set_track+0x1c/0x30\n[ 352.805900] netlink_rcv_skb+0xc6/0x1f0\n[ 352.806587] ? rht_deferred_worker+0x6b0/0x6b0\n[ 352.807455] ? rtnl_calcit.isra.0+0x1f0/0x1f0\n[ 352.808324] ? netlink_ack+0x4d0/0x4d0\n[ 352.809086] ? netlink_deliver_tap+0x62/0x3d0\n[ 352.809951] netlink_unicast+0x353/0x480\n[ 352.810744] ? netlink_attachskb+0x430/0x430\n[ 352.811586] ? __alloc_skb+0xd7/0x200\n[ 352.812349] netlink_sendmsg+0x396/0x680\n[ 352.813132] ? netlink_unicast+0x480/0x480\n[ 352.813952] ? __import_iovec+0x192/0x210\n[ 352.814759] ? netlink_unicast+0x480/0x480\n[ 352.815580] sock_sendmsg+0x6c/0x80\n[ 352.816299] ____sys_sendmsg+0x3a5/0x3c0\n[ 352.817096] ? kernel_sendmsg+0x30/0x30\n[ 352.817873] ? __ia32_sys_recvmmsg+0x150/0x150\n[ 352.818753] ___sys_sendmsg+0xd8/0x140\n[ 352.819518] ? sendmsg_copy_msghdr+0x110/0x110\n[ 352.820402] ? ___sys_recvmsg+0xf4/0x1a0\n[ 352.821110] ? __copy_msghdr_from_user+0x260/0x260\n[ 352.821934] ? _raw_spin_lock+0x81/0xd0\n[ 352.822680] ? __handle_mm_fault+0xef3/0x1b20\n[ 352.823549] ? rb_insert_color+0x2a/0x270\n[ 352.824373] ? copy_page_range+0x16b0/0x16b0\n[ 352.825209] ? perf_event_update_userpage+0x2d0/0x2d0\n[ 352.826190] ? __fget_light+0xd9/0xf0\n[ 352.826941] __sys_sendmsg+0xb3/0x130\n[ 352.827613] ? __sys_sendmsg_sock+0x20/0x20\n[ 352.828377] ? do_user_addr_fault+0x2c5/0x8a0\n[ 352.829184] ? fpregs_assert_state_consistent+0x52/0x60\n[ 352.830001] ? exit_to_user_mode_prepare+0x32/0x160\n[ 352.830845] do_syscall_64+0x35/0x80\n[ 352.831445] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 352.832331] RIP: 0033:0x7f7bee973c17\n[ \n---truncated---",
"id": "GHSA-xwvh-fxhh-3qrr",
"modified": "2025-01-14T18:31:49Z",
"published": "2024-05-21T15:31:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47402"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/694b0cee7f8546b69a80996a29cb3cf4149c0453"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d0d520c19e7ea19ed38dc5797b12397b6ccf9f88"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d5ef190693a7d76c5c192d108e8dec48307b46ee"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dab4677bdbffa5c8270e79e34e51c89efa0728a0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX49-HMRJ-2WM5
Vulnerability from github – Published: 2022-11-02 12:00 – Updated: 2022-11-02 19:00A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.7, macOS Ventura 13, iOS 16, watchOS 9, macOS Monterey 12.6, tvOS 16. An app may be able to execute arbitrary code with kernel privileges.
{
"affected": [],
"aliases": [
"CVE-2022-32914"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-01T20:15:00Z",
"severity": "HIGH"
},
"details": "A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.7, macOS Ventura 13, iOS 16, watchOS 9, macOS Monterey 12.6, tvOS 16. An app may be able to execute arbitrary code with kernel privileges.",
"id": "GHSA-xx49-hmrj-2wm5",
"modified": "2022-11-02T19:00:28Z",
"published": "2022-11-02T12:00:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32914"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213443"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213444"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213446"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213486"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213487"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213488"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX4Q-9H3Q-WPV9
Vulnerability from github – Published: 2022-03-19 00:00 – Updated: 2022-03-25 00:00A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.4, iOS 15.4 and iPadOS 15.4, macOS Monterey 12.3. An application may be able to gain elevated privileges.
{
"affected": [],
"aliases": [
"CVE-2022-22641"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-18T18:15:00Z",
"severity": "CRITICAL"
},
"details": "A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.4, iOS 15.4 and iPadOS 15.4, macOS Monterey 12.3. An application may be able to gain elevated privileges.",
"id": "GHSA-xx4q-9h3q-wpv9",
"modified": "2022-03-25T00:00:44Z",
"published": "2022-03-19T00:00:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-22641"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213182"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213183"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213186"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX58-G4HC-MR9F
Vulnerability from github – Published: 2022-05-24 17:29 – Updated: 2022-09-06 00:00QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.
{
"affected": [],
"aliases": [
"CVE-2020-25084"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-09-25T05:15:00Z",
"severity": "LOW"
},
"details": "QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.",
"id": "GHSA-xx58-g4hc-mr9f",
"modified": "2022-09-06T00:00:28Z",
"published": "2022-05-24T17:29:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25084"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
},
{
"type": "WEB",
"url": "https://lists.nongnu.org/archive/html/qemu-devel/2020-08/msg08050.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20201009-0005"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2020/09/16/5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-XX5J-8788-QWJ6
Vulnerability from github – Published: 2025-08-22 18:31 – Updated: 2026-01-07 18:30In the Linux kernel, the following vulnerability has been resolved:
net: appletalk: Fix use-after-free in AARP proxy probe
The AARP proxy‐probe routine (aarp_proxy_probe_network) sends a probe, releases the aarp_lock, sleeps, then re-acquires the lock. During that window an expire timer thread (__aarp_expire_timer) can remove and kfree() the same entry, leading to a use-after-free.
race condition:
cpu 0 | cpu 1
atalk_sendmsg() | atif_proxy_probe_device()
aarp_send_ddp() | aarp_proxy_probe_network()
mod_timer() | lock(aarp_lock) // LOCK!!
timeout around 200ms | alloc(aarp_entry)
and then call | proxies[hash] = aarp_entry
aarp_expire_timeout() | aarp_send_probe()
| unlock(aarp_lock) // UNLOCK!!
lock(aarp_lock) // LOCK!! | msleep(100);
__aarp_expire_timer(&proxies[ct]) |
free(aarp_entry) |
unlock(aarp_lock) // UNLOCK!! |
| lock(aarp_lock) // LOCK!!
| UAF aarp_entry !!
================================================================== BUG: KASAN: slab-use-after-free in aarp_proxy_probe_network+0x560/0x630 net/appletalk/aarp.c:493 Read of size 4 at addr ffff8880123aa360 by task repro/13278
CPU: 3 UID: 0 PID: 13278 Comm: repro Not tainted 6.15.2 #3 PREEMPT(full) Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1b0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc1/0x630 mm/kasan/report.c:521 kasan_report+0xca/0x100 mm/kasan/report.c:634 aarp_proxy_probe_network+0x560/0x630 net/appletalk/aarp.c:493 atif_proxy_probe_device net/appletalk/ddp.c:332 [inline] atif_ioctl+0xb58/0x16c0 net/appletalk/ddp.c:857 atalk_ioctl+0x198/0x2f0 net/appletalk/ddp.c:1818 sock_do_ioctl+0xdc/0x260 net/socket.c:1190 sock_ioctl+0x239/0x6a0 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x194/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcb/0x250 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Allocated: aarp_alloc net/appletalk/aarp.c:382 [inline] aarp_proxy_probe_network+0xd8/0x630 net/appletalk/aarp.c:468 atif_proxy_probe_device net/appletalk/ddp.c:332 [inline] atif_ioctl+0xb58/0x16c0 net/appletalk/ddp.c:857 atalk_ioctl+0x198/0x2f0 net/appletalk/ddp.c:1818
Freed: kfree+0x148/0x4d0 mm/slub.c:4841 __aarp_expire net/appletalk/aarp.c:90 [inline] __aarp_expire_timer net/appletalk/aarp.c:261 [inline] aarp_expire_timeout+0x480/0x6e0 net/appletalk/aarp.c:317
The buggy address belongs to the object at ffff8880123aa300 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 96 bytes inside of freed 192-byte region [ffff8880123aa300, ffff8880123aa3c0)
Memory state around the buggy address: ffff8880123aa200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880123aa280: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880123aa300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880123aa380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880123aa400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
{
"affected": [],
"aliases": [
"CVE-2025-38666"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-22T16:15:42Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: appletalk: Fix use-after-free in AARP proxy probe\n\nThe AARP proxy\u2010probe routine (aarp_proxy_probe_network) sends a probe,\nreleases the aarp_lock, sleeps, then re-acquires the lock. During that\nwindow an expire timer thread (__aarp_expire_timer) can remove and\nkfree() the same entry, leading to a use-after-free.\n\nrace condition:\n\n cpu 0 | cpu 1\n atalk_sendmsg() | atif_proxy_probe_device()\n aarp_send_ddp() | aarp_proxy_probe_network()\n mod_timer() | lock(aarp_lock) // LOCK!!\n timeout around 200ms | alloc(aarp_entry)\n and then call | proxies[hash] = aarp_entry\n aarp_expire_timeout() | aarp_send_probe()\n | unlock(aarp_lock) // UNLOCK!!\n lock(aarp_lock) // LOCK!! | msleep(100);\n __aarp_expire_timer(\u0026proxies[ct]) |\n free(aarp_entry) |\n unlock(aarp_lock) // UNLOCK!! |\n | lock(aarp_lock) // LOCK!!\n | UAF aarp_entry !!\n\n==================================================================\nBUG: KASAN: slab-use-after-free in aarp_proxy_probe_network+0x560/0x630 net/appletalk/aarp.c:493\nRead of size 4 at addr ffff8880123aa360 by task repro/13278\n\nCPU: 3 UID: 0 PID: 13278 Comm: repro Not tainted 6.15.2 #3 PREEMPT(full)\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1b0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0xc1/0x630 mm/kasan/report.c:521\n kasan_report+0xca/0x100 mm/kasan/report.c:634\n aarp_proxy_probe_network+0x560/0x630 net/appletalk/aarp.c:493\n atif_proxy_probe_device net/appletalk/ddp.c:332 [inline]\n atif_ioctl+0xb58/0x16c0 net/appletalk/ddp.c:857\n atalk_ioctl+0x198/0x2f0 net/appletalk/ddp.c:1818\n sock_do_ioctl+0xdc/0x260 net/socket.c:1190\n sock_ioctl+0x239/0x6a0 net/socket.c:1311\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:906 [inline]\n __se_sys_ioctl fs/ioctl.c:892 [inline]\n __x64_sys_ioctl+0x194/0x200 fs/ioctl.c:892\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcb/0x250 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n \u003c/TASK\u003e\n\nAllocated:\n aarp_alloc net/appletalk/aarp.c:382 [inline]\n aarp_proxy_probe_network+0xd8/0x630 net/appletalk/aarp.c:468\n atif_proxy_probe_device net/appletalk/ddp.c:332 [inline]\n atif_ioctl+0xb58/0x16c0 net/appletalk/ddp.c:857\n atalk_ioctl+0x198/0x2f0 net/appletalk/ddp.c:1818\n\nFreed:\n kfree+0x148/0x4d0 mm/slub.c:4841\n __aarp_expire net/appletalk/aarp.c:90 [inline]\n __aarp_expire_timer net/appletalk/aarp.c:261 [inline]\n aarp_expire_timeout+0x480/0x6e0 net/appletalk/aarp.c:317\n\nThe buggy address belongs to the object at ffff8880123aa300\n which belongs to the cache kmalloc-192 of size 192\nThe buggy address is located 96 bytes inside of\n freed 192-byte region [ffff8880123aa300, ffff8880123aa3c0)\n\nMemory state around the buggy address:\n ffff8880123aa200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n ffff8880123aa280: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc\n\u003effff8880123aa300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ^\n ffff8880123aa380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc\n ffff8880123aa400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n==================================================================",
"id": "GHSA-xx5j-8788-qwj6",
"modified": "2026-01-07T18:30:22Z",
"published": "2025-08-22T18:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38666"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/186942d19c0222617ef61f50e1dba91e269a5963"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a6209e4649d45fd85d4193abc481911858ffc6f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5f02ea0f63dd38c41539ea290fcc1693c73aa8e5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6c4a92d07b0850342d3becf2e608f805e972467c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/82d19a70ced28b17a38ebf1b6978c6c7db894979"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b35694ffabb2af308a1f725d70f60fd8a47d1f3e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e4f1564c5b699eb89b3040688fd6b4e57922f1f6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f90b6bb203f3f38bf2b3d976113d51571df9a482"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX6H-J6CP-9V8W
Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-05-13 01:34This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.1.0.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of OCG objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6435.
{
"affected": [],
"aliases": [
"CVE-2018-17624"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-10-29T21:29:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.1.0.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of OCG objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6435.",
"id": "GHSA-xx6h-j6cp-9v8w",
"modified": "2022-05-13T01:34:00Z",
"published": "2022-05-13T01:34:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17624"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://zerodayinitiative.com/advisories/ZDI-18-1105"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX75-MX4M-HG3V
Vulnerability from github – Published: 2022-05-17 02:21 – Updated: 2022-05-17 02:21Use-after-free vulnerability in Adobe Reader and Acrobat before 11.0.18, Acrobat and Acrobat Reader DC Classic before 15.006.30243, and Acrobat and Acrobat Reader DC Continuous before 15.020.20039 on Windows and OS X allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1089, CVE-2016-1091, CVE-2016-6944, CVE-2016-6945, CVE-2016-6946, CVE-2016-6949, CVE-2016-6952, CVE-2016-6953, CVE-2016-6961, CVE-2016-6962, CVE-2016-6963, CVE-2016-6964, CVE-2016-6965, CVE-2016-6967, CVE-2016-6968, CVE-2016-6969, CVE-2016-6979, CVE-2016-6988, and CVE-2016-6993.
{
"affected": [],
"aliases": [
"CVE-2016-6971"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-10-13T19:59:00Z",
"severity": "CRITICAL"
},
"details": "Use-after-free vulnerability in Adobe Reader and Acrobat before 11.0.18, Acrobat and Acrobat Reader DC Classic before 15.006.30243, and Acrobat and Acrobat Reader DC Continuous before 15.020.20039 on Windows and OS X allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1089, CVE-2016-1091, CVE-2016-6944, CVE-2016-6945, CVE-2016-6946, CVE-2016-6949, CVE-2016-6952, CVE-2016-6953, CVE-2016-6961, CVE-2016-6962, CVE-2016-6963, CVE-2016-6964, CVE-2016-6965, CVE-2016-6967, CVE-2016-6968, CVE-2016-6969, CVE-2016-6979, CVE-2016-6988, and CVE-2016-6993.",
"id": "GHSA-xx75-mx4m-hg3v",
"modified": "2022-05-17T02:21:29Z",
"published": "2022-05-17T02:21:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6971"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb16-33.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/93491"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1036986"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX77-4MM7-3WPX
Vulnerability from github – Published: 2023-07-29 00:30 – Updated: 2024-04-04 06:25Use after free in Blink in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2021-4319"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-29T00:15:10Z",
"severity": "HIGH"
},
"details": "Use after free in Blink in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-xx77-4mm7-3wpx",
"modified": "2024-04-04T06:25:09Z",
"published": "2023-07-29T00:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4319"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1214199"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XX9W-Q44V-R2WH
Vulnerability from github – Published: 2022-05-24 16:47 – Updated: 2022-10-12 19:00This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.16811. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within ConvertToPDF_x86.dll. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7701.
{
"affected": [],
"aliases": [
"CVE-2019-6758"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-03T19:29:00Z",
"severity": "MODERATE"
},
"details": "This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.16811. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within ConvertToPDF_x86.dll. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7701.",
"id": "GHSA-xx9w-q44v-r2wh",
"modified": "2022-10-12T19:00:35Z",
"published": "2022-05-24T16:47:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-6758"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-19-432"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-XXCM-Q624-6HCV
Vulnerability from github – Published: 2024-01-08 15:30 – Updated: 2025-11-04 21:30Multiple use-after-free vulnerabilities exist in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. A specially crafted .vcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the use-after-free when triggered via the vcd2vzt conversion utility.
{
"affected": [],
"aliases": [
"CVE-2023-37576"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-08T15:15:18Z",
"severity": "HIGH"
},
"details": "Multiple use-after-free vulnerabilities exist in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. A specially crafted .vcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the use-after-free when triggered via the vcd2vzt conversion utility.",
"id": "GHSA-xxcm-q624-6hcv",
"modified": "2025-11-04T21:30:58Z",
"published": "2024-01-08T15:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37576"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1806"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1806"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.