CVE-2023-52638 (GCVE-0-2023-52638)
Vulnerability from cvelistv5
Published
2024-04-03 14:54
Modified
2025-05-04 07:40
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock The following 3 locks would race against each other, causing the deadlock situation in the Syzbot bug report: - j1939_socks_lock - active_session_list_lock - sk_session_queue_lock A reasonable fix is to change j1939_socks_lock to an rwlock, since in the rare situations where a write lock is required for the linked list that j1939_socks_lock is protecting, the code does not attempt to acquire any more locks. This would break the circular lock dependency, where, for example, the current thread already locks j1939_socks_lock and attempts to acquire sk_session_queue_lock, and at the same time, another thread attempts to acquire j1939_socks_lock while holding sk_session_queue_lock. NOTE: This patch along does not fix the unregister_netdevice bug reported by Syzbot; instead, it solves a deadlock situation to prepare for one or more further patches to actually fix the Syzbot bug, which appears to be a reference counting problem within the j1939 codebase. [mkl: remove unrelated newline change]
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/03358aba991668d3bb2c65b3c82aa32c36851170\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/aedda066d717a0b4335d7e0a00b2e3a61e40afcf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/26dfe112ec2e95fe0099681f6aec33da13c2dd8e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/559b6322f9480bff68cfa98d108991e945a4f284\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6cdedc18ba7b9dacc36466e27e3267d201948c8d\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T23:03:21.237Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52638\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T19:30:24.987517Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-18T19:57:28.014Z\"}}], \"cna\": {\"title\": \"can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"03358aba991668d3bb2c65b3c82aa32c36851170\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"aedda066d717a0b4335d7e0a00b2e3a61e40afcf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"26dfe112ec2e95fe0099681f6aec33da13c2dd8e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"559b6322f9480bff68cfa98d108991e945a4f284\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"6cdedc18ba7b9dacc36466e27e3267d201948c8d\", \"versionType\": \"git\"}], \"programFiles\": [\"net/can/j1939/j1939-priv.h\", \"net/can/j1939/main.c\", \"net/can/j1939/socket.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.79\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.18\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/can/j1939/j1939-priv.h\", \"net/can/j1939/main.c\", \"net/can/j1939/socket.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/03358aba991668d3bb2c65b3c82aa32c36851170\"}, {\"url\": \"https://git.kernel.org/stable/c/aedda066d717a0b4335d7e0a00b2e3a61e40afcf\"}, {\"url\": \"https://git.kernel.org/stable/c/26dfe112ec2e95fe0099681f6aec33da13c2dd8e\"}, {\"url\": \"https://git.kernel.org/stable/c/559b6322f9480bff68cfa98d108991e945a4f284\"}, {\"url\": \"https://git.kernel.org/stable/c/6cdedc18ba7b9dacc36466e27e3267d201948c8d\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: j1939: prevent deadlock by changing j1939_socks_lock to rwlock\\n\\nThe following 3 locks would race against each other, causing the\\ndeadlock situation in the Syzbot bug report:\\n\\n- j1939_socks_lock\\n- active_session_list_lock\\n- sk_session_queue_lock\\n\\nA reasonable fix is to change j1939_socks_lock to an rwlock, since in\\nthe rare situations where a write lock is required for the linked list\\nthat j1939_socks_lock is protecting, the code does not attempt to\\nacquire any more locks. This would break the circular lock dependency,\\nwhere, for example, the current thread already locks j1939_socks_lock\\nand attempts to acquire sk_session_queue_lock, and at the same time,\\nanother thread attempts to acquire j1939_socks_lock while holding\\nsk_session_queue_lock.\\n\\nNOTE: This patch along does not fix the unregister_netdevice bug\\nreported by Syzbot; instead, it solves a deadlock situation to prepare\\nfor one or more further patches to actually fix the Syzbot bug, which\\nappears to be a reference counting problem within the j1939 codebase.\\n\\n[mkl: remove unrelated newline change]\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:23:06.801Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52638\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:23:06.801Z\", \"dateReserved\": \"2024-03-06T09:52:12.093Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T14:54:41.271Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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