{"id":"CVE-2023-52672","state":"PUBLISHED","title":"pipe: wakeup wr_wait after setting max_usage","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npipe: wakeup wr_wait after setting max_usage\n\nCommit c73be61cede5 (\"pipe: Add general notification queue support\") a\nregression was introduced that would lock up resized pipes under certain\nconditions. See the reproducer in [1].\n\nThe commit resizing the pipe ring size was moved to a different\nfunction, doing that moved the wakeup for pipe->wr_wait before actually\nraising pipe->max_usage. If a pipe was full before the resize occured it\nwould result in the wakeup never actually triggering pipe_write.\n\nSet @max_usage and @nr_accounted before waking writers if this isn't a\nwatch queue.\n\n[Christian Brauner <brauner@kernel.org>: rewrite to account for watch queues]","publishedAt":"2024-05-17T14:02:10.308Z","updatedAt":"2026-05-11T19:31:26.508Z","severity":{"score":7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8","versionType":"git"},{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"3efbd114b91525bb095b8ae046382197d92126b9","versionType":"git"},{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"b87a1229d8668fbc78ebd9ca0fc797a76001c60f","versionType":"git"},{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"68e51bdb1194f11d3452525b99c98aff6f837b24","versionType":"git"},{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"6fb70694f8d1ac34e45246b0ac988f025e1e5b55","versionType":"git"},{"version":"c73be61cede5882f9605a852414db559c0ebedfd","status":"affected","lessThan":"e95aada4cb93d42e25c30a0ef9eb2923d9711d4a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/pipe.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.210","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.149","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.76","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.15","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.3","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/pipe.c"]}],"references":["https://git.kernel.org/stable/c/162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8","https://git.kernel.org/stable/c/3efbd114b91525bb095b8ae046382197d92126b9","https://git.kernel.org/stable/c/b87a1229d8668fbc78ebd9ca0fc797a76001c60f","https://git.kernel.org/stable/c/68e51bdb1194f11d3452525b99c98aff6f837b24","https://git.kernel.org/stable/c/6fb70694f8d1ac34e45246b0ac988f025e1e5b55","https://git.kernel.org/stable/c/e95aada4cb93d42e25c30a0ef9eb2923d9711d4a","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52672.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52672","state":"PUBLISHED","datePublished":"2024-05-17T14:02:10.308Z","dateUpdated":"2026-05-11T19:31:26.508Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-03-07T14:49:46.886Z"},"containers":{"cna":{"title":"pipe: wakeup wr_wait after setting max_usage","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npipe: wakeup wr_wait after setting max_usage\n\nCommit c73be61cede5 (\"pipe: Add general notification queue support\") a\nregression was introduced that would lock up resized pipes under certain\nconditions. 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