{"id":"CVE-2023-53391","state":"PUBLISHED","title":"shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nshmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs\n\nAs the ramfs-based tmpfs uses ramfs_init_fs_context() for the\ninit_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()\nto free it and avoid a memory leak.","publishedAt":"2025-09-18T13:33:33.602Z","updatedAt":"2026-05-11T19:44:03.015Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"5fada375113767b3b57f1b04f7a4fe64ffaa626f","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"487f229efea80c00dd7397547ec4f25fb8999d99","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"1f34bf8b442c6d720e7fa6f15e8702427e48aea9","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"ebe07db840992a3886694ac3d303b06f4b70ce00","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"36ce9d76b0a93bae799e27e4f5ac35478c676592","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ramfs/inode.c","include/linux/ramfs.h","mm/shmem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"5.10.188","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.121","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ramfs/inode.c","include/linux/ramfs.h","mm/shmem.c"]}],"references":["https://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626f","https://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99","https://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9","https://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00","https://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53391.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53391","state":"PUBLISHED","datePublished":"2025-09-18T13:33:33.602Z","dateUpdated":"2026-05-11T19:44:03.015Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:54:09.737Z"},"containers":{"cna":{"title":"shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nshmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs\n\nAs the ramfs-based tmpfs uses ramfs_init_fs_context() for the\ninit_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb()\nto free it and avoid a memory leak."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"5fada375113767b3b57f1b04f7a4fe64ffaa626f","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"487f229efea80c00dd7397547ec4f25fb8999d99","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"1f34bf8b442c6d720e7fa6f15e8702427e48aea9","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"ebe07db840992a3886694ac3d303b06f4b70ce00","versionType":"git"},{"version":"c3b1b1cbf002e65a3cabd479e68b5f35886a26db","status":"affected","lessThan":"36ce9d76b0a93bae799e27e4f5ac35478c676592","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ramfs/inode.c","include/linux/ramfs.h","mm/shmem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"5.10.188","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.121","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ramfs/inode.c","include/linux/ramfs.h","mm/shmem.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626f"},{"url":"https://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99"},{"url":"https://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9"},{"url":"https://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00"},{"url":"https://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:44:03.015Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.121"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.4.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.5"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53391","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:59:10.291580Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","description":"CWE-noinfo Not enough information"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T19:03:05.597Z"}}]}}}