CVE-2022-50291 (GCVE-0-2022-50291)
Vulnerability from cvelistv5
Published
2025-09-15 14:45
Modified
2025-09-15 14:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly in kcm_rfree(). Annotate the read and writes accordingly. We do the same for kcm->rx_wait in the following patch. syzbot reported: BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1: unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313 kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373 __strp_recv+0x64c/0xd20 net/strparser/strparser.c:301 strp_recv+0x6d/0x80 net/strparser/strparser.c:335 tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703 strp_read_sock net/strparser/strparser.c:358 [inline] do_strp_work net/strparser/strparser.c:406 [inline] strp_work+0xe8/0x180 net/strparser/strparser.c:415 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289 worker_thread+0x618/0xa70 kernel/workqueue.c:2436 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 read to 0xffff888123d827b8 of 8 bytes by task 5859 on cpu 0: kcm_rfree+0x14c/0x220 net/kcm/kcmsock.c:181 skb_release_head_state+0x8e/0x160 net/core/skbuff.c:841 skb_release_all net/core/skbuff.c:852 [inline] __kfree_skb net/core/skbuff.c:868 [inline] kfree_skb_reason+0x5c/0x260 net/core/skbuff.c:891 kfree_skb include/linux/skbuff.h:1216 [inline] kcm_recvmsg+0x226/0x2b0 net/kcm/kcmsock.c:1161 ____sys_recvmsg+0x16c/0x2e0 ___sys_recvmsg net/socket.c:2743 [inline] do_recvmmsg+0x2f1/0x710 net/socket.c:2837 __sys_recvmmsg net/socket.c:2916 [inline] __do_sys_recvmmsg net/socket.c:2939 [inline] __se_sys_recvmmsg net/socket.c:2932 [inline] __x64_sys_recvmmsg+0xde/0x160 net/socket.c:2932 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0xffff88812971ce00 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5859 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-12189-g19d17ab7c68b-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12a0eb340c9a22e0f8c00d2c0c1a60695ead926a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13dba69e18d04c8eec7596369f2a0596b0260275
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15e4dabda11b0fa31d510a915d1a580f47dfc92e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/342d918cf9a45df9cf11bbe7162b851adefd178f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf46af730e58d340f6f740bc69a07c5f6b85c655
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c325f92d8d9b223d5842609ca067e898e9d34566
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e94395e916b48a5b912a0a04570981b5b091acb0
Impacted products
Vendor Product Version
Linux Linux Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
Version: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3
 Create a notification for this product.
   Linux Linux Version: 4.6
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/kcm/kcmsock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "13dba69e18d04c8eec7596369f2a0596b0260275",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "bf46af730e58d340f6f740bc69a07c5f6b85c655",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "e94395e916b48a5b912a0a04570981b5b091acb0",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "c325f92d8d9b223d5842609ca067e898e9d34566",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "342d918cf9a45df9cf11bbe7162b851adefd178f",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "12a0eb340c9a22e0f8c00d2c0c1a60695ead926a",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            },
            {
              "lessThan": "15e4dabda11b0fa31d510a915d1a580f47dfc92e",
              "status": "affected",
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/kcm/kcmsock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "lessThan": "4.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.332",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.298",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.264",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.223",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.332",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.298",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.264",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.223",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.153",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.77",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.7",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: annotate data-races around kcm-\u003erx_psock\n\nkcm-\u003erx_psock can be read locklessly in kcm_rfree().\nAnnotate the read and writes accordingly.\n\nWe do the same for kcm-\u003erx_wait in the following patch.\n\nsyzbot reported:\nBUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm\n\nwrite to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:\nunreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313\nkcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373\n__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301\nstrp_recv+0x6d/0x80 net/strparser/strparser.c:335\ntcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703\nstrp_read_sock net/strparser/strparser.c:358 [inline]\ndo_strp_work net/strparser/strparser.c:406 [inline]\nstrp_work+0xe8/0x180 net/strparser/strparser.c:415\nprocess_one_work+0x3d3/0x720 kernel/workqueue.c:2289\nworker_thread+0x618/0xa70 kernel/workqueue.c:2436\nkthread+0x1a9/0x1e0 kernel/kthread.c:376\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n\nread to 0xffff888123d827b8 of 8 bytes by task 5859 on cpu 0:\nkcm_rfree+0x14c/0x220 net/kcm/kcmsock.c:181\nskb_release_head_state+0x8e/0x160 net/core/skbuff.c:841\nskb_release_all net/core/skbuff.c:852 [inline]\n__kfree_skb net/core/skbuff.c:868 [inline]\nkfree_skb_reason+0x5c/0x260 net/core/skbuff.c:891\nkfree_skb include/linux/skbuff.h:1216 [inline]\nkcm_recvmsg+0x226/0x2b0 net/kcm/kcmsock.c:1161\n____sys_recvmsg+0x16c/0x2e0\n___sys_recvmsg net/socket.c:2743 [inline]\ndo_recvmmsg+0x2f1/0x710 net/socket.c:2837\n__sys_recvmmsg net/socket.c:2916 [inline]\n__do_sys_recvmmsg net/socket.c:2939 [inline]\n__se_sys_recvmmsg net/socket.c:2932 [inline]\n__x64_sys_recvmmsg+0xde/0x160 net/socket.c:2932\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0xffff88812971ce00 -\u003e 0x0000000000000000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 5859 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-12189-g19d17ab7c68b-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:45:47.510Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/13dba69e18d04c8eec7596369f2a0596b0260275"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf46af730e58d340f6f740bc69a07c5f6b85c655"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079"
        },
        {
          "url": "https://git.kernel.org/stable/c/e94395e916b48a5b912a0a04570981b5b091acb0"
        },
        {
          "url": "https://git.kernel.org/stable/c/c325f92d8d9b223d5842609ca067e898e9d34566"
        },
        {
          "url": "https://git.kernel.org/stable/c/342d918cf9a45df9cf11bbe7162b851adefd178f"
        },
        {
          "url": "https://git.kernel.org/stable/c/12a0eb340c9a22e0f8c00d2c0c1a60695ead926a"
        },
        {
          "url": "https://git.kernel.org/stable/c/15e4dabda11b0fa31d510a915d1a580f47dfc92e"
        }
      ],
      "title": "kcm: annotate data-races around kcm-\u003erx_psock",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50291",
    "datePublished": "2025-09-15T14:45:47.510Z",
    "dateReserved": "2025-09-15T14:18:36.811Z",
    "dateUpdated": "2025-09-15T14:45:47.510Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50291\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:40.400\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nkcm: annotate data-races around kcm-\u003erx_psock\\n\\nkcm-\u003erx_psock can be read locklessly in kcm_rfree().\\nAnnotate the read and writes accordingly.\\n\\nWe do the same for kcm-\u003erx_wait in the following patch.\\n\\nsyzbot reported:\\nBUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm\\n\\nwrite to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:\\nunreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313\\nkcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373\\n__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301\\nstrp_recv+0x6d/0x80 net/strparser/strparser.c:335\\ntcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703\\nstrp_read_sock net/strparser/strparser.c:358 [inline]\\ndo_strp_work net/strparser/strparser.c:406 [inline]\\nstrp_work+0xe8/0x180 net/strparser/strparser.c:415\\nprocess_one_work+0x3d3/0x720 kernel/workqueue.c:2289\\nworker_thread+0x618/0xa70 kernel/workqueue.c:2436\\nkthread+0x1a9/0x1e0 kernel/kthread.c:376\\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\\n\\nread to 0xffff888123d827b8 of 8 bytes by task 5859 on cpu 0:\\nkcm_rfree+0x14c/0x220 net/kcm/kcmsock.c:181\\nskb_release_head_state+0x8e/0x160 net/core/skbuff.c:841\\nskb_release_all net/core/skbuff.c:852 [inline]\\n__kfree_skb net/core/skbuff.c:868 [inline]\\nkfree_skb_reason+0x5c/0x260 net/core/skbuff.c:891\\nkfree_skb include/linux/skbuff.h:1216 [inline]\\nkcm_recvmsg+0x226/0x2b0 net/kcm/kcmsock.c:1161\\n____sys_recvmsg+0x16c/0x2e0\\n___sys_recvmsg net/socket.c:2743 [inline]\\ndo_recvmmsg+0x2f1/0x710 net/socket.c:2837\\n__sys_recvmmsg net/socket.c:2916 [inline]\\n__do_sys_recvmmsg net/socket.c:2939 [inline]\\n__se_sys_recvmmsg net/socket.c:2932 [inline]\\n__x64_sys_recvmmsg+0xde/0x160 net/socket.c:2932\\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nvalue changed: 0xffff88812971ce00 -\u003e 0x0000000000000000\\n\\nReported by Kernel Concurrency Sanitizer on:\\nCPU: 0 PID: 5859 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-12189-g19d17ab7c68b-dirty #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/12a0eb340c9a22e0f8c00d2c0c1a60695ead926a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/13dba69e18d04c8eec7596369f2a0596b0260275\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/15e4dabda11b0fa31d510a915d1a580f47dfc92e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/342d918cf9a45df9cf11bbe7162b851adefd178f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bf46af730e58d340f6f740bc69a07c5f6b85c655\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c325f92d8d9b223d5842609ca067e898e9d34566\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e94395e916b48a5b912a0a04570981b5b091acb0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • 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.