FKIE_CVE-2022-49153
Vulnerability from fkie_nvd - Published: 2025-02-26 07:00 - Updated: 2026-06-17 05:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/
Summary
In the Linux kernel, the following vulnerability has been resolved:
wireguard: socket: free skb in send6 when ipv6 is disabled
I got a memory leak report:
unreferenced object 0xffff8881191fc040 (size 232):
comm "kworker/u17:0", pid 23193, jiffies 4295238848 (age 3464.870s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff814c3ef4>] slab_post_alloc_hook+0x84/0x3b0
[<ffffffff814c8977>] kmem_cache_alloc_node+0x167/0x340
[<ffffffff832974fb>] __alloc_skb+0x1db/0x200
[<ffffffff82612b5d>] wg_socket_send_buffer_to_peer+0x3d/0xc0
[<ffffffff8260e94a>] wg_packet_send_handshake_initiation+0xfa/0x110
[<ffffffff8260ec81>] wg_packet_handshake_send_worker+0x21/0x30
[<ffffffff8119c558>] process_one_work+0x2e8/0x770
[<ffffffff8119ca2a>] worker_thread+0x4a/0x4b0
[<ffffffff811a88e0>] kthread+0x120/0x160
[<ffffffff8100242f>] ret_from_fork+0x1f/0x30
In function wg_socket_send_buffer_as_reply_to_skb() or wg_socket_send_
buffer_to_peer(), the semantics of send6() is required to free skb. But
when CONFIG_IPV6 is disable, kfree_skb() is missing. This patch adds it
to fix this bug.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireguard/socket.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "096f9d35cac0a0c95ffafc00db84786b665a4837",
"status": "affected",
"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
"versionType": "git"
},
{
"lessThan": "402991a9771587acc2947cf6c4d689c5397f2258",
"status": "affected",
"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
"versionType": "git"
},
{
"lessThan": "ebcc492f4ba14bae54b898f1016a37b4282558d1",
"status": "affected",
"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
"versionType": "git"
},
{
"lessThan": "0b19bcb753dbfb74710d12bb2761ec5ed706c726",
"status": "affected",
"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
"versionType": "git"
},
{
"lessThan": "bbbf962d9460194993ee1943a793a0a0af4a7fbf",
"status": "affected",
"version": "e7096c131e5161fa3b8e52a650d7719d2857adfd",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/wireguard/socket.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"lessThan": "5.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"version": "5.16.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.17.*",
"status": "unaffected",
"version": "5.17.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "05F0A158-8722-4B5A-BEC5-245BC5E3EA9A",
"versionEndExcluding": "5.10.110",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "27C42AE8-B387-43E2-938A-E1C8B40BE6D5",
"versionEndExcluding": "5.15.33",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B",
"versionEndExcluding": "5.16.19",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "210C679C-CF84-44A3-8939-E629C87E54BF",
"versionEndExcluding": "5.17.2",
"versionStartIncluding": "5.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: socket: free skb in send6 when ipv6 is disabled\n\nI got a memory leak report:\n\nunreferenced object 0xffff8881191fc040 (size 232):\n comm \"kworker/u17:0\", pid 23193, jiffies 4295238848 (age 3464.870s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [\u003cffffffff814c3ef4\u003e] slab_post_alloc_hook+0x84/0x3b0\n [\u003cffffffff814c8977\u003e] kmem_cache_alloc_node+0x167/0x340\n [\u003cffffffff832974fb\u003e] __alloc_skb+0x1db/0x200\n [\u003cffffffff82612b5d\u003e] wg_socket_send_buffer_to_peer+0x3d/0xc0\n [\u003cffffffff8260e94a\u003e] wg_packet_send_handshake_initiation+0xfa/0x110\n [\u003cffffffff8260ec81\u003e] wg_packet_handshake_send_worker+0x21/0x30\n [\u003cffffffff8119c558\u003e] process_one_work+0x2e8/0x770\n [\u003cffffffff8119ca2a\u003e] worker_thread+0x4a/0x4b0\n [\u003cffffffff811a88e0\u003e] kthread+0x120/0x160\n [\u003cffffffff8100242f\u003e] ret_from_fork+0x1f/0x30\n\nIn function wg_socket_send_buffer_as_reply_to_skb() or wg_socket_send_\nbuffer_to_peer(), the semantics of send6() is required to free skb. But\nwhen CONFIG_IPV6 is disable, kfree_skb() is missing. This patch adds it\nto fix this bug."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wireguard: socket: skb libre en send6 cuando ipv6 est\u00e1 deshabilitado Recib\u00ed un informe de p\u00e9rdida de memoria: objeto sin referencia 0xffff8881191fc040 (tama\u00f1o 232): comm \"kworker/u17:0\", pid 23193, jiffies 4295238848 (edad 3464.870s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] slab_post_alloc_hook+0x84/0x3b0 [] kmem_cache_alloc_node+0x167/0x340 [] __alloc_skb+0x1db/0x200 [] wg_socket_send_buffer_to_peer+0x3d/0xc0 [] wg_packet_send_handshake_initiation+0xfa/0x110 [] wg_packet_handshake_send_worker+0x21/0x30 [] process_one_work+0x2e8/0x770 [] worker_thread+0x4a/0x4b0 [] kthread+0x120/0x160 [] ret_from_fork+0x1f/0x30 En la funci\u00f3n wg_socket_send_buffer_as_reply_to_skb() o wg_socket_send_buffer_to_peer(), se requiere la sem\u00e1ntica de send6() para liberar skb. Pero cuando CONFIG_IPV6 est\u00e1 deshabilitado, falta kfree_skb(). Este parche lo agrega para corregir este error."
}
],
"id": "CVE-2022-49153",
"lastModified": "2026-06-17T05:17:13.757",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-49153",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:47:43.493008Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-02-26T07:00:52.533",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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