cve-2023-52699
Vulnerability from cvelistv5
Published
2024-05-19 10:10
Modified
2024-12-19 08:24
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: sysv: don't call sb_bread() with pointers_lock held syzbot is reporting sleep in atomic context in SysV filesystem [1], for sb_bread() is called with rw_spinlock held. A "write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock" bug and a "sb_bread() with write_lock(&pointers_lock)" bug were introduced by "Replace BKL for chain locking with sysvfs-private rwlock" in Linux 2.5.12. Then, "[PATCH] err1-40: sysvfs locking fix" in Linux 2.6.8 fixed the former bug by moving pointers_lock lock to the callers, but instead introduced a "sb_bread() with read_lock(&pointers_lock)" bug (which made this problem easier to hit). Al Viro suggested that why not to do like get_branch()/get_block()/ find_shared() in Minix filesystem does. And doing like that is almost a revert of "[PATCH] err1-40: sysvfs locking fix" except that get_branch() from with find_shared() is called without write_lock(&pointers_lock).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13b33feb2ebddc2b1aa607f553566b18a4af1d76Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/13b33feb2ebddc2b1aa607f553566b18a4af1d76Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904acPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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      nvd: "{\"cve\":{\"id\":\"CVE-2023-52699\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-19T11:15:47.507\",\"lastModified\":\"2025-04-04T14:24:16.360\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsysv: don't call sb_bread() with pointers_lock held\\n\\nsyzbot is reporting sleep in atomic context in SysV filesystem [1], for\\nsb_bread() is called with rw_spinlock held.\\n\\nA \\\"write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock\\\" bug\\nand a \\\"sb_bread() with write_lock(&pointers_lock)\\\" bug were introduced by\\n\\\"Replace BKL for chain locking with sysvfs-private rwlock\\\" in Linux 2.5.12.\\n\\nThen, \\\"[PATCH] err1-40: sysvfs locking fix\\\" in Linux 2.6.8 fixed the\\nformer bug by moving pointers_lock lock to the callers, but instead\\nintroduced a \\\"sb_bread() with read_lock(&pointers_lock)\\\" bug (which made\\nthis problem easier to hit).\\n\\nAl Viro suggested that why not to do like get_branch()/get_block()/\\nfind_shared() in Minix filesystem does. And doing like that is almost a\\nrevert of \\\"[PATCH] err1-40: sysvfs locking fix\\\" except that get_branch()\\n from with find_shared() is called without write_lock(&pointers_lock).\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: sysv: no llame a sb_bread() con pointers_lock retenido syzbot informa suspensión en contexto atómico en el sistema de archivos SysV [1], porque sb_bread() se llama con rw_spinlock retenido. Un error \\\"write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock\\\" y un error \\\"sb_bread() with write_lock(&pointers_lock)\\\" fueron introducidos por \\\"Reemplazar BKL para bloqueo de cadena con sysvfs-private rwlock\\\" en Linux 2.5.12. Luego, \\\"[PATCH] err1-40: corrección de bloqueo de sysvfs\\\" en Linux 2.6.8 solucionó el error anterior moviendo el bloqueo pointers_lock a las personas que llaman, pero en su lugar introdujo un error \\\"sb_bread() con read_lock(&pointers_lock)\\\" (que hizo que esto problema más fácil de abordar). Al Viro sugirió que por qué no hacer lo que hace get_branch()/get_block()/find_shared() en el sistema de archivos Minix. Y hacer eso es casi una reversión de \\\"[PATCH] err1-40: corrección de bloqueo de sysvfs\\\", excepto que get_branch() de find_shared() se llama sin 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{\"id\": \"CVE-2023-52699\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-21T15:05:59.108260Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:25.125Z\"}}], \"cna\": {\"title\": \"sysv: don't call sb_bread() with pointers_lock held\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"13b33feb2ebddc2b1aa607f553566b18a4af1d76\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": 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made\\nthis problem easier to hit).\\n\\nAl Viro suggested that why not to do like get_branch()/get_block()/\\nfind_shared() in Minix filesystem does. 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         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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