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CVE-2022-49153 (GCVE-0-2022-49153)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:54
VLAI
Title
wireguard: socket: free skb in send6 when ipv6 is disabled
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:47 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 096f9d35cac0a0c95ffafc00db84786b665a4837 (git)
Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 402991a9771587acc2947cf6c4d689c5397f2258 (git)
Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < ebcc492f4ba14bae54b898f1016a37b4282558d1 (git)
Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < 0b19bcb753dbfb74710d12bb2761ec5ed706c726 (git)
Affected: e7096c131e5161fa3b8e52a650d7719d2857adfd , < bbbf962d9460194993ee1943a793a0a0af4a7fbf (git)
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Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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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 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    "redhat_vex": {
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wireguard: socket: free skb in send6 when ipv6 is disabled",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49153.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-02T02:05:47Z",
      "cve": "CVE-2022-49153",
      "id": "CVE-2022-49153",
      "initial_release_date": "2025-02-27T03:11:27Z",
      "product_status:known_affected": "360",
      "product_status:known_not_affected": "345",
      "product_status:recommended": "315",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49153",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49153.json",
      "version": "50"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49153\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:47:43.493008Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:07:52.618Z\"}}], \"cna\": {\"title\": \"wireguard: socket: free skb in send6 when ipv6 is disabled\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"096f9d35cac0a0c95ffafc00db84786b665a4837\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"402991a9771587acc2947cf6c4d689c5397f2258\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"ebcc492f4ba14bae54b898f1016a37b4282558d1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"0b19bcb753dbfb74710d12bb2761ec5ed706c726\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7096c131e5161fa3b8e52a650d7719d2857adfd\", \"lessThan\": \"bbbf962d9460194993ee1943a793a0a0af4a7fbf\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireguard/socket.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\": \"5.10.110\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireguard/socket.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/096f9d35cac0a0c95ffafc00db84786b665a4837\"}, {\"url\": \"https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258\"}, {\"url\": \"https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1\"}, {\"url\": \"https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726\"}, {\"url\": \"https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.110\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.2\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:31:07.768Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49153\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T19:57:01.052Z\", \"dateReserved\": \"2025-02-26T01:49:39.275Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:55:18.745Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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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.


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.