CVE-2022-49420 (GCVE-0-2022-49420)
Vulnerability from cvelistv5
Published
2025-02-26 02:12
Modified
2025-05-04 08:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: annotate races around sk->sk_bound_dev_if UDP sendmsg() is lockless, and reads sk->sk_bound_dev_if while this field can be changed by another thread. Adds minimal annotations to avoid KCSAN splats for UDP. Following patches will add more annotations to potential lockless readers. BUG: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg write to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0: __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221 ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272 inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576 __sys_connect_file net/socket.c:1900 [inline] __sys_connect+0x197/0x1b0 net/socket.c:1917 __do_sys_connect net/socket.c:1927 [inline] __se_sys_connect net/socket.c:1924 [inline] __x64_sys_connect+0x3d/0x50 net/socket.c:1924 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1: udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436 inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652 sock_sendmsg_nosec net/socket.c:705 [inline] sock_sendmsg net/socket.c:725 [inline] ____sys_sendmsg+0x39a/0x510 net/socket.c:2413 ___sys_sendmsg net/socket.c:2467 [inline] __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553 __do_sys_sendmmsg net/socket.c:2582 [inline] __se_sys_sendmmsg net/socket.c:2579 [inline] __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -> 0xffffff9b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G W 5.18.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 I chose to not add Fixes: tag because race has minor consequences and stable teams busy enough.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/ip.h",
            "include/net/sock.h",
            "net/ipv6/datagram.c",
            "net/ipv6/udp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "20b2f61797873a2b18b5ff1a304ad2674fa1e0a5",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4c971d2f3548e4f11b1460ac048f5307e4b39fdb",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/ip.h",
            "include/net/sock.h",
            "net/ipv6/datagram.c",
            "net/ipv6/udp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: annotate races around sk-\u003esk_bound_dev_if\n\nUDP sendmsg() is lockless, and reads sk-\u003esk_bound_dev_if while\nthis field can be changed by another thread.\n\nAdds minimal annotations to avoid KCSAN splats for UDP.\nFollowing patches will add more annotations to potential lockless readers.\n\nBUG: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg\n\nwrite to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0:\n __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221\n ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272\n inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576\n __sys_connect_file net/socket.c:1900 [inline]\n __sys_connect+0x197/0x1b0 net/socket.c:1917\n __do_sys_connect net/socket.c:1927 [inline]\n __se_sys_connect net/socket.c:1924 [inline]\n __x64_sys_connect+0x3d/0x50 net/socket.c:1924\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nread to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1:\n udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436\n inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652\n sock_sendmsg_nosec net/socket.c:705 [inline]\n sock_sendmsg net/socket.c:725 [inline]\n ____sys_sendmsg+0x39a/0x510 net/socket.c:2413\n ___sys_sendmsg net/socket.c:2467 [inline]\n __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553\n __do_sys_sendmmsg net/socket.c:2582 [inline]\n __se_sys_sendmmsg net/socket.c:2579 [inline]\n __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nvalue changed: 0x00000000 -\u003e 0xffffff9b\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G        W         5.18.0-rc1-syzkaller-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n\nI chose to not add Fixes: tag because race has minor consequences\nand stable teams busy enough."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:37:17.463Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/20b2f61797873a2b18b5ff1a304ad2674fa1e0a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c971d2f3548e4f11b1460ac048f5307e4b39fdb"
        }
      ],
      "title": "net: annotate races around sk-\u003esk_bound_dev_if",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49420",
    "datePublished": "2025-02-26T02:12:44.316Z",
    "dateReserved": "2025-02-26T02:08:31.568Z",
    "dateUpdated": "2025-05-04T08:37:17.463Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49420\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:18.440\",\"lastModified\":\"2025-10-21T12:13:56.750\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: annotate races around sk-\u003esk_bound_dev_if\\n\\nUDP sendmsg() is lockless, and reads sk-\u003esk_bound_dev_if while\\nthis field can be changed by another thread.\\n\\nAdds minimal annotations to avoid KCSAN splats for UDP.\\nFollowing patches will add more annotations to potential lockless readers.\\n\\nBUG: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg\\n\\nwrite to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0:\\n __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221\\n ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272\\n inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576\\n __sys_connect_file net/socket.c:1900 [inline]\\n __sys_connect+0x197/0x1b0 net/socket.c:1917\\n __do_sys_connect net/socket.c:1927 [inline]\\n __se_sys_connect net/socket.c:1924 [inline]\\n __x64_sys_connect+0x3d/0x50 net/socket.c:1924\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nread to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1:\\n udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436\\n inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652\\n sock_sendmsg_nosec net/socket.c:705 [inline]\\n sock_sendmsg net/socket.c:725 [inline]\\n ____sys_sendmsg+0x39a/0x510 net/socket.c:2413\\n ___sys_sendmsg net/socket.c:2467 [inline]\\n __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553\\n __do_sys_sendmmsg net/socket.c:2582 [inline]\\n __se_sys_sendmmsg net/socket.c:2579 [inline]\\n __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nvalue changed: 0x00000000 -\u003e 0xffffff9b\\n\\nReported by Kernel Concurrency Sanitizer on:\\nCPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G        W         5.18.0-rc1-syzkaller-dirty #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\n\\nI chose to not add Fixes: tag because race has minor consequences\\nand stable teams busy enough.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: annotate races around sk-\u0026gt;sk_bound_dev_if UDP sendmsg() is lockless, and reads sk-\u0026gt;sk_bound_dev_if while this field can be changed by another thread. A\u00f1ade anotaciones m\u00ednimas para evitar splats de KCSAN para UDP. Los siguientes parches a\u00f1adir\u00e1n m\u00e1s anotaciones a posibles lectores sin bloqueo. ERROR: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg write to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0: __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221 ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272 inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576 __sys_connect_file net/socket.c:1900 [inline] __sys_connect+0x197/0x1b0 net/socket.c:1917 __do_sys_connect net/socket.c:1927 [inline] __se_sys_connect net/socket.c:1924 [inline] __x64_sys_connect+0x3d/0x50 net/socket.c:1924 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1: udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436 inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652 sock_sendmsg_nosec net/socket.c:705 [inline] sock_sendmsg net/socket.c:725 [inline] ____sys_sendmsg+0x39a/0x510 net/socket.c:2413 ___sys_sendmsg net/socket.c:2467 [inline] __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553 __do_sys_sendmmsg net/socket.c:2582 [inline] __se_sys_sendmmsg net/socket.c:2579 [inline] __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000000 -\u0026gt; 0xffffff9b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G W 5.18.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Eleg\u00ed no agregar la etiqueta Correcciones: porque la ejecuci\u00f3n tiene consecuencias menores y los equipos estables est\u00e1n suficientemente ocupados.\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"3108C4DF-1578-4A9A-ADC7-1128DE921D69\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/20b2f61797873a2b18b5ff1a304ad2674fa1e0a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4c971d2f3548e4f11b1460ac048f5307e4b39fdb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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