cve-2022-49904
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 12:45
Severity ?
EPSS score ?
Summary
net, neigh: Fix null-ptr-deref in neigh_table_clear()
References
{
"containers": {
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],
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{
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"product": "Linux",
"programFiles": [
"net/core/neighbour.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "6.0"
},
{
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"status": "unaffected",
"version": "0",
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},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.299",
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},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.265",
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},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.224",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.154",
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},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.78",
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{
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"version": "6.0.8",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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"vulnerable": true
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{
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"versionEndExcluding": "4.19.265",
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{
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},
{
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],
"negate": false,
"operator": "OR"
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet, neigh: Fix null-ptr-deref in neigh_table_clear()\n\nWhen IPv6 module gets initialized but hits an error in the middle,\nkenel panic with:\n\nKASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]\nCPU: 1 PID: 361 Comm: insmod\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370\nRSP: 0018:ffff888012677908 EFLAGS: 00000202\n...\nCall Trace:\n \u003cTASK\u003e\n neigh_table_clear+0x94/0x2d0\n ndisc_cleanup+0x27/0x40 [ipv6]\n inet6_init+0x21c/0x2cb [ipv6]\n do_one_initcall+0xd3/0x4d0\n do_init_module+0x1ae/0x670\n...\nKernel panic - not syncing: Fatal exception\n\nWhen ipv6 initialization fails, it will try to cleanup and calls:\n\nneigh_table_clear()\n neigh_ifdown(tbl, NULL)\n pneigh_queue_purge(\u0026tbl-\u003eproxy_queue, dev_net(dev == NULL))\n # dev_net(NULL) triggers null-ptr-deref.\n\nFix it by passing NULL to pneigh_queue_purge() in neigh_ifdown() if dev\nis NULL, to make kernel not panic immediately."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T12:45:24.097Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/0d38b4ca6679e72860ff8730e79bb99d0e9fa3b0"
},
{
"url": "https://git.kernel.org/stable/c/b736592de2aa53aee2d48d6b129bc0c892007bbe"
},
{
"url": "https://git.kernel.org/stable/c/b49f6b2f21f543d4dc88fb7b1ec2adccb822f27c"
},
{
"url": "https://git.kernel.org/stable/c/1c89642e7f2b7ecc9635610653f5c2f0276c0051"
},
{
"url": "https://git.kernel.org/stable/c/2b45d6d0c41cb9593868e476681efb1aae5078a1"
},
{
"url": "https://git.kernel.org/stable/c/a99a8ec4c62180c889482a2ff6465033e0743458"
},
{
"url": "https://git.kernel.org/stable/c/f8017317cb0b279b8ab98b0f3901a2e0ac880dad"
}
],
"title": "net, neigh: Fix null-ptr-deref in neigh_table_clear()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-49904",
"datePublished": "2025-05-01T14:10:48.998Z",
"dateReserved": "2025-05-01T14:05:17.245Z",
"dateUpdated": "2025-05-04T12:45:24.097Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2022-49904\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:15.480\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet, neigh: Fix null-ptr-deref in neigh_table_clear()\\n\\nWhen IPv6 module gets initialized but hits an error in the middle,\\nkenel panic with:\\n\\nKASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]\\nCPU: 1 PID: 361 Comm: insmod\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\\nRIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370\\nRSP: 0018:ffff888012677908 EFLAGS: 00000202\\n...\\nCall Trace:\\n \u003cTASK\u003e\\n neigh_table_clear+0x94/0x2d0\\n ndisc_cleanup+0x27/0x40 [ipv6]\\n inet6_init+0x21c/0x2cb [ipv6]\\n do_one_initcall+0xd3/0x4d0\\n do_init_module+0x1ae/0x670\\n...\\nKernel panic - not syncing: Fatal exception\\n\\nWhen ipv6 initialization fails, it will try to cleanup and calls:\\n\\nneigh_table_clear()\\n neigh_ifdown(tbl, NULL)\\n pneigh_queue_purge(\u0026tbl-\u003eproxy_queue, dev_net(dev == NULL))\\n # dev_net(NULL) triggers null-ptr-deref.\\n\\nFix it by passing NULL to pneigh_queue_purge() in neigh_ifdown() if dev\\nis NULL, to make kernel not panic immediately.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net, neigh: Fix null-ptr-deref en neigh_table_clear() Cuando se inicializa un m\u00f3dulo IPv6 pero se produce un error en el medio, kenel entra en p\u00e1nico con: KASAN: null-ptr-deref en el rango [0x0000000000000598-0x000000000000059f] CPU: 1 PID: 361 Comm: insmod Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370 RSP: 0018:ffff888012677908 EFLAGS: 00000202 ... Seguimiento de llamadas: neigh_table_clear+0x94/0x2d0 ndisc_cleanup+0x27/0x40 [ipv6] inet6_init+0x21c/0x2cb [ipv6] do_one_initcall+0xd3/0x4d0 do_init_module+0x1ae/0x670 ... P\u00e1nico del kernel - no sincroniza: Excepci\u00f3n fatal Cuando falla la inicializaci\u00f3n de ipv6, intentar\u00e1 limpiar y llamar\u00e1 a: neigh_table_clear() neigh_ifdown(tbl, NULL) pneigh_queue_purge(\u0026amp;tbl-\u0026gt;proxy_queue, dev_net(dev == NULL)) # dev_net(NULL) activa null-ptr-deref. Corr\u00edjalo pasando NULL a pneigh_queue_purge() en neigh_ifdown() si dev es NULL, para que el kernel no entre en p\u00e1nico inmediatamente.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d38b4ca6679e72860ff8730e79bb99d0e9fa3b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1c89642e7f2b7ecc9635610653f5c2f0276c0051\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2b45d6d0c41cb9593868e476681efb1aae5078a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a99a8ec4c62180c889482a2ff6465033e0743458\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b49f6b2f21f543d4dc88fb7b1ec2adccb822f27c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b736592de2aa53aee2d48d6b129bc0c892007bbe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f8017317cb0b279b8ab98b0f3901a2e0ac880dad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.