CVE-2024-26951 (GCVE-0-2024-26951)
Vulnerability from cvelistv5 – Published: 2024-05-01 05:18 – Updated: 2026-08-05 11:28
VLAI
EPSS
VEX
Title
wireguard: netlink: check for dangling peer via is_dead instead of empty list
Summary
In the Linux kernel, the following vulnerability has been resolved:
wireguard: netlink: check for dangling peer via is_dead instead of empty list
If all peers are removed via wg_peer_remove_all(), rather than setting
peer_list to empty, the peer is added to a temporary list with a head on
the stack of wg_peer_remove_all(). If a netlink dump is resumed and the
cursored peer is one that has been removed via wg_peer_remove_all(), it
will iterate from that peer and then attempt to dump freed peers.
Fix this by instead checking peer->is_dead, which was explictly created
for this purpose. Also move up the device_update_lock lockdep assertion,
since reading is_dead relies on that.
It can be reproduced by a small script like:
echo "Setting config..."
ip link add dev wg0 type wireguard
wg setconf wg0 /big-config
(
while true; do
echo "Showing config..."
wg showconf wg0 > /dev/null
done
) &
sleep 4
wg setconf wg0 <(printf "[Peer]\nPublicKey=$(wg genkey)\n")
Resulting in:
BUG: KASAN: slab-use-after-free in __lock_acquire+0x182a/0x1b20
Read of size 8 at addr ffff88811956ec70 by task wg/59
CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5
Call Trace:
<TASK>
dump_stack_lvl+0x47/0x70
print_address_description.constprop.0+0x2c/0x380
print_report+0xab/0x250
kasan_report+0xba/0xf0
__lock_acquire+0x182a/0x1b20
lock_acquire+0x191/0x4b0
down_read+0x80/0x440
get_peer+0x140/0xcb0
wg_get_device_dump+0x471/0x1130
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:45 UTC
Assigner
References
9 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
e7096c131e5161fa3b8e52a650d7719d2857adfd , < f52be46e3e6ecefc2539119784324f0cbc09620a
(git)
Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 710a177f347282eea162aec8712beb1f42d5ad87 (git) Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < b7cea3a9af0853fdbb1b16633a458f991dde6aac (git) Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 13d107794304306164481d31ce33f8fdb25a9c04 (git) Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 7bedfe4cfa38771840a355970e4437cd52d4046b (git) Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 302b2dfc013baca3dea7ceda383930d9297d231d (git) Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 55b6c738673871c9b0edae05d0c97995c1ff08c4 (git) |
guessed | |
| Linux | Linux |
Affected:
5.6
Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.154 , ≤ 5.15.* (semver) Unaffected: 6.1.84 , ≤ 6.1.* (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8.3 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
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"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwireguard: netlink: check for dangling peer via is_dead instead of empty list\\n\\nIf all peers are removed via wg_peer_remove_all(), rather than setting\\npeer_list to empty, the peer is added to a temporary list with a head on\\nthe stack of wg_peer_remove_all(). If a netlink dump is resumed and the\\ncursored peer is one that has been removed via wg_peer_remove_all(), it\\nwill iterate from that peer and then attempt to dump freed peers.\\n\\nFix this by instead checking peer-\u003eis_dead, which was explictly created\\nfor this purpose. Also move up the device_update_lock lockdep assertion,\\nsince reading is_dead relies on that.\\n\\nIt can be reproduced by a small script like:\\n\\n echo \\\"Setting config...\\\"\\n ip link add dev wg0 type wireguard\\n wg setconf wg0 /big-config\\n (\\n while true; do\\n echo \\\"Showing config...\\\"\\n wg showconf wg0 \u003e /dev/null\\n done\\n ) \u0026\\n sleep 4\\n wg setconf wg0 \u003c(printf \\\"[Peer]\\\\nPublicKey=$(wg genkey)\\\\n\\\")\\n\\nResulting in:\\n\\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x182a/0x1b20\\n Read of size 8 at addr ffff88811956ec70 by task wg/59\\n CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x47/0x70\\n print_address_description.constprop.0+0x2c/0x380\\n print_report+0xab/0x250\\n kasan_report+0xba/0xf0\\n __lock_acquire+0x182a/0x1b20\\n lock_acquire+0x191/0x4b0\\n down_read+0x80/0x440\\n get_peer+0x140/0xcb0\\n wg_get_device_dump+0x471/0x1130\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wireguard: netlink: verifique si hay pares pendientes a trav\\u00e9s de is_dead en lugar de una lista vac\\u00eda. Si todos los pares se eliminan a trav\\u00e9s de wg_peer_remove_all(), en lugar de configurar peer_list como vac\\u00edo, el par se agrega a una lista temporal. lista con un encabezado en la pila de wg_peer_remove_all(). Si se reanuda un volcado de netlink y el par seleccionado es uno que se elimin\\u00f3 mediante wg_peer_remove_all(), iterar\\u00e1 desde ese par y luego intentar\\u00e1 volcar los pares liberados. Para solucionar este problema, marque peer-\u0026gt;is_dead, que se cre\\u00f3 expl\\u00edcitamente para este prop\\u00f3sito. Tambi\\u00e9n suba la aserci\\u00f3n de bloqueo de dispositivo_update_lock, ya que la lectura is_dead depende de eso. Se puede reproducir mediante un peque\\u00f1o script como: echo \\\"Configuraci\\u00f3n de configuraci\\u00f3n...\\\" ip link add dev wg0 tipo wireguard wg setconf wg0 /big-config (mientras sea verdadero; haga echo \\\"Mostrando configuraci\\u00f3n...\\\" wg showconf wg0 \u0026gt; / dev/null done) \u0026amp; sleep 4 wg setconf wg0 \u0026lt;(printf \\\"[Peer]\\\\nPublicKey=$(wg genkey)\\\\n\\\") Resultando en: ERROR: KASAN: slab-use-after-free en __lock_acquire+0x182a/0x1b20 Lectura de tama\\u00f1o 8 en la direcci\\u00f3n ffff88811956ec70 mediante la tarea wg/59 CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5 Seguimiento de llamadas: dump_stack_lvl+0x47/0x70 print_address_description.constprop.0+0x2c /0x380 print_report+0xab/0x250 kasan_report+0xba/0xf0 __lock_acquire+0x182a/0x1b20 lock_acquire+0x191/0x4b0 down_read+0x80/0x440 get_peer+0x140/0xcb0 wg_get_device_dump+0x471/0x1130\"}]",
"id": "CVE-2024-26951",
"lastModified": "2024-11-21T09:03:28.350",
"published": "2024-05-01T06:15:11.223",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
},
"microsoft_vex": {
"current_release_date": "2026-02-21T00:14:58.000Z",
"cve": "CVE-2024-26951",
"id": "msrc_CVE-2024-26951",
"initial_release_date": "2024-05-02T07:00:00.000Z",
"product_status:fixed": "5",
"product_status:known_affected": "5",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "wireguard: netlink: check for dangling peer via is_dead instead of empty list",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26951.json",
"version": "13"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-26951\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:11.223\",\"lastModified\":\"2026-08-04T11:17:25.113\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwireguard: netlink: check for dangling peer via is_dead instead of empty list\\n\\nIf all peers are removed via wg_peer_remove_all(), rather than setting\\npeer_list to empty, the peer is added to a temporary list with a head on\\nthe stack of wg_peer_remove_all(). If a netlink dump is resumed and the\\ncursored peer is one that has been removed via wg_peer_remove_all(), it\\nwill iterate from that peer and then attempt to dump freed peers.\\n\\nFix this by instead checking peer-\u003eis_dead, which was explictly created\\nfor this purpose. Also move up the device_update_lock lockdep assertion,\\nsince reading is_dead relies on that.\\n\\nIt can be reproduced by a small script like:\\n\\n echo \\\"Setting config...\\\"\\n ip link add dev wg0 type wireguard\\n wg setconf wg0 /big-config\\n (\\n while true; do\\n echo \\\"Showing config...\\\"\\n wg showconf wg0 \u003e /dev/null\\n done\\n ) \u0026\\n sleep 4\\n wg setconf wg0 \u003c(printf \\\"[Peer]\\\\nPublicKey=$(wg genkey)\\\\n\\\")\\n\\nResulting in:\\n\\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x182a/0x1b20\\n Read of size 8 at addr ffff88811956ec70 by task wg/59\\n CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x47/0x70\\n print_address_description.constprop.0+0x2c/0x380\\n print_report+0xab/0x250\\n kasan_report+0xba/0xf0\\n __lock_acquire+0x182a/0x1b20\\n lock_acquire+0x191/0x4b0\\n down_read+0x80/0x440\\n get_peer+0x140/0xcb0\\n wg_get_device_dump+0x471/0x1130\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wireguard: netlink: verifique si hay pares pendientes a trav\u00e9s de is_dead en lugar de una lista vac\u00eda. Si todos los pares se eliminan a trav\u00e9s de wg_peer_remove_all(), en lugar de configurar peer_list como vac\u00edo, el par se agrega a una lista temporal. lista con un encabezado en la pila de wg_peer_remove_all(). Si se reanuda un volcado de netlink y el par seleccionado es uno que se elimin\u00f3 mediante wg_peer_remove_all(), iterar\u00e1 desde ese par y luego intentar\u00e1 volcar los pares liberados. Para solucionar este problema, marque peer-\u0026gt;is_dead, que se cre\u00f3 expl\u00edcitamente para este prop\u00f3sito. Tambi\u00e9n suba la aserci\u00f3n de bloqueo de dispositivo_update_lock, ya que la lectura is_dead depende de eso. Se puede reproducir mediante un peque\u00f1o script como: echo \\\"Configuraci\u00f3n de configuraci\u00f3n...\\\" ip link add dev wg0 tipo wireguard wg setconf wg0 /big-config (mientras sea verdadero; haga echo \\\"Mostrando configuraci\u00f3n...\\\" wg showconf wg0 \u0026gt; / dev/null done) \u0026amp; sleep 4 wg setconf wg0 \u0026lt;(printf \\\"[Peer]\\\\nPublicKey=$(wg genkey)\\\\n\\\") Resultando en: ERROR: KASAN: slab-use-after-free en __lock_acquire+0x182a/0x1b20 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88811956ec70 mediante la tarea wg/59 CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5 Seguimiento de llamadas: dump_stack_lvl+0x47/0x70 print_address_description.constprop.0+0x2c /0x380 print_report+0xab/0x250 kasan_report+0xba/0xf0 __lock_acquire+0x182a/0x1b20 lock_acquire+0x191/0x4b0 down_read+0x80/0x440 get_peer+0x140/0xcb0 wg_get_device_dump+0x471/0x1130\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireguard/netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"f52be46e3e6ecefc2539119784324f0cbc09620a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"710a177f347282eea162aec8712beb1f42d5ad87\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"b7cea3a9af0853fdbb1b16633a458f991dde6aac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"13d107794304306164481d31ce33f8fdb25a9c04\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"7bedfe4cfa38771840a355970e4437cd52d4046b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"302b2dfc013baca3dea7ceda383930d9297d231d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e7096c131e5161fa3b8e52a650d7719d2857adfd\",\"lessThan\":\"55b6c738673871c9b0edae05d0c97995c1ff08c4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireguard/netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.215\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.154\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.84\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.24\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.12\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.3\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC 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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-08-04T22:48:41+00:00",
"cve": "CVE-2024-26951",
"id": "CVE-2024-26951",
"initial_release_date": "2024-05-01T00:00:00+00:00",
"product_status:fixed": "280",
"product_status:known_affected": "22",
"product_status:known_not_affected": "98",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: wireguard: netlink: check for dangling peer via is_dead instead of empty list",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26951.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-29T01:57:36Z",
"cve": "CVE-2024-26951",
"id": "CVE-2024-26951",
"initial_release_date": "2024-05-03T02:09:49Z",
"product_status:known_affected": "316",
"product_status:known_not_affected": "312",
"product_status:recommended": "675",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-26951",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26951.json",
"version": "98"
},
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Per kernel scoring guidance, netlink-reachable bugs are Local.\\nAC:L - The attacker controls both sides of the race \\u2014 one thread runs the resumable dump while another issues a peer-replace \\u2014 and controls the peer count that forces multi-skb dump resumption, exactly as in the maintainer\u0027s shell-script reproducer. Nothing depends on conditions outside the attacker\u0027s influence.\\nPR:L - The ops use `GENL_UNS_ADMIN_PERM`, i.e. `netlink_ns_capable(skb, net-\u003euser_ns, CAP_NET_ADMIN)`, and the family is `netnsok`, so an unprivileged user can obtain the needed capability via `unshare -Urn` \\u2014 verified by successfully creating a WireGuard device in a user namespace as a normal user.\\nUI:N - Exploitation is entirely driven by the attacker\u0027s own two threads issuing netlink requests on a device they created; no victim action or cooperation is involved.\\nS:U - The use-after-free corrupts kernel heap state and leaks kernel memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\\nC:H - `get_peer()` reads freed `wg_peer` objects and `nla_put()`s their contents \\u2014 public key, preshared key, endpoint, counters \\u2014 directly into the netlink reply returned to userspace, and the traversal off a stale stack-resident list head can dereference wild pointers, giving a broad kernel-memory read primitive.\\nI:H - `down_read()`/`read_lock_bh()` on the freed and wild-pointer objects perform atomic read-modify-write operations on attacker-groomable memory, which combined with heap spraying of the reclaimed `wg_peer` slab yields an exploitable write primitive for control-flow hijacking.\\nA:H - The maintainer\u0027s reproducer produces a KASAN slab-use-after-free with a corrupted rwsem acquisition; unmitigated this reliably oopses or panics the kernel, and a garbage lock value can also hang the dumping task indefinitely.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"f52be46e3e6ecefc2539119784324f0cbc09620a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"710a177f347282eea162aec8712beb1f42d5ad87\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"b7cea3a9af0853fdbb1b16633a458f991dde6aac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"13d107794304306164481d31ce33f8fdb25a9c04\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"7bedfe4cfa38771840a355970e4437cd52d4046b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"302b2dfc013baca3dea7ceda383930d9297d231d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"55b6c738673871c9b0edae05d0c97995c1ff08c4\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireguard/netlink.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.215\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.154\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.84\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireguard/netlink.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\"}, {\"url\": \"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\"}, {\"url\": \"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\"}, {\"url\": \"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\"}, {\"url\": \"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\"}, {\"url\": \"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\"}, {\"url\": \"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwireguard: netlink: check for dangling peer via is_dead instead of empty list\\n\\nIf all peers are removed via wg_peer_remove_all(), rather than setting\\npeer_list to empty, the peer is added to a temporary list with a head on\\nthe stack of wg_peer_remove_all(). If a netlink dump is resumed and the\\ncursored peer is one that has been removed via wg_peer_remove_all(), it\\nwill iterate from that peer and then attempt to dump freed peers.\\n\\nFix this by instead checking peer-\u003eis_dead, which was explictly created\\nfor this purpose. Also move up the device_update_lock lockdep assertion,\\nsince reading is_dead relies on that.\\n\\nIt can be reproduced by a small script like:\\n\\n echo \\\"Setting config...\\\"\\n ip link add dev wg0 type wireguard\\n wg setconf wg0 /big-config\\n (\\n while true; do\\n echo \\\"Showing config...\\\"\\n wg showconf wg0 \u003e /dev/null\\n done\\n ) \u0026\\n sleep 4\\n wg setconf wg0 \u003c(printf \\\"[Peer]\\\\nPublicKey=$(wg genkey)\\\\n\\\")\\n\\nResulting in:\\n\\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x182a/0x1b20\\n Read of size 8 at addr ffff88811956ec70 by task wg/59\\n CPU: 2 PID: 59 Comm: wg Not tainted 6.8.0-rc2-debug+ #5\\n Call Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x47/0x70\\n print_address_description.constprop.0+0x2c/0x380\\n print_report+0xab/0x250\\n kasan_report+0xba/0xf0\\n __lock_acquire+0x182a/0x1b20\\n lock_acquire+0x191/0x4b0\\n down_read+0x80/0x440\\n get_peer+0x140/0xcb0\\n wg_get_device_dump+0x471/0x1130\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:28:32.058Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-26951\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:28:32.058Z\", \"dateReserved\": \"2024-02-19T14:20:24.198Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:18:34.520Z\", \"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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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