CVE-2024-26951 (GCVE-0-2024-26951)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:18 – Updated: 2026-05-12 11:50
VLAI?
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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)
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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)
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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"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26951\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:11.223\",\"lastModified\":\"2026-05-12T12:16:27.707\",\"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\"}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.6\",\"versionEndExcluding\":\"5.10.215\",\"matchCriteriaId\":\"AA5E7B02-005F-4B5E-AFCA-13D2AE4EF328\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.154\",\"matchCriteriaId\":\"577E212E-7E95-4A71-9B5C-F1D1A3AFFF46\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.84\",\"matchCriteriaId\":\"834D9BD5-42A6-4D74-979E-4D6D93F630FD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.24\",\"matchCriteriaId\":\"8018C1D0-0A5F-48D0-BC72-A2B33FDDA693\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.12\",\"matchCriteriaId\":\"6BE9771A-BAFD-4624-95F9-58D536540C53\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.8.3\",\"matchCriteriaId\":\"4C59BBC3-6495-4A77-9C82-55EC7CDF5E02\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f52be46e3e6ecefc2539119784324f0cbc09620a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/710a177f347282eea162aec8712beb1f42d5ad87\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b7cea3a9af0853fdbb1b16633a458f991dde6aac\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/13d107794304306164481d31ce33f8fdb25a9c04\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/7bedfe4cfa38771840a355970e4437cd52d4046b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/302b2dfc013baca3dea7ceda383930d9297d231d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/55b6c738673871c9b0edae05d0c97995c1ff08c4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:21:05.788Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26951\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:45:36.397018Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:13.827Z\"}}], \"cna\": {\"title\": \"wireguard: netlink: check for dangling peer via is_dead instead of empty list\", \"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\": 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{\"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\": \"2025-05-04T09:00:32.262Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26951\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:00:32.262Z\", \"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": "5.1"
    }
  }
}


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Tags
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.