{"id":"CVE-2023-52699","title":"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.…","summary":"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.…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-667"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 4.19.312","linux_kernel >= 4.20, < 5.4.274","linux_kernel >= 5.5, < 5.10.215","linux_kernel >= 5.11, < 5.15.155","linux_kernel >= 5.16, < 6.1.86","linux_kernel >= 6.2, < 6.6.27","linux_kernel >= 6.7, < 6.8.6","debian_linux = 10.0"],"patched":["linux_kernel 6.8.6"],"published":"2024-05-19","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:16.273","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-52699","references":[{"url":"https://git.kernel.org/stable/c/13b33feb2ebddc2b1aa607f553566b18a4af1d76","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904ac","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/13b33feb2ebddc2b1aa607f553566b18a4af1d76","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904ac","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00974,"epssPercentile":0.6187,"ingestedAt":"2026-10-15T03:30:12.688Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-05-21T15:05:59.108260Z"},"slug":"CVE-2023-52699","body":"## Overview\n\nIn 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).\n\n## Affected\n\n- `linux_kernel < 4.19.312`\n- `linux_kernel >= 4.20, < 5.4.274`\n- `linux_kernel >= 5.5, < 5.10.215`\n- `linux_kernel >= 5.11, < 5.15.155`\n- `linux_kernel >= 5.16, < 6.1.86`\n- `linux_kernel >= 6.2, < 6.6.27`\n- `linux_kernel >= 6.7, < 6.8.6`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.6`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}