{"id":"CVE-2023-53402","state":"PUBLISHED","title":"kernel/printk/index.c: fix memory leak with using debugfs_lookup()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkernel/printk/index.c: fix memory leak with using debugfs_lookup()\n\nWhen calling debugfs_lookup() the result must have dput() called on it,\notherwise the memory will leak over time.  To make things simpler, just\ncall debugfs_lookup_and_remove() instead which handles all of the logic\nat once.","publishedAt":"2025-09-18T13:58:42.207Z","updatedAt":"2026-05-11T19:44:16.816Z","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":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"2e07fa2e30d48d24a791483774a3d4b76769e0cf","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"c578a68ffcdc2e8c72556bebdaae2b7500398e81","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"13969236b6900b5a3625ad2193569588e978f1cc","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"55bf243c514553e907efcf2bda92ba090eca8c64","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/printk/index.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.100","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.18","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.5","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/printk/index.c"]}],"references":["https://git.kernel.org/stable/c/2e07fa2e30d48d24a791483774a3d4b76769e0cf","https://git.kernel.org/stable/c/c578a68ffcdc2e8c72556bebdaae2b7500398e81","https://git.kernel.org/stable/c/13969236b6900b5a3625ad2193569588e978f1cc","https://git.kernel.org/stable/c/55bf243c514553e907efcf2bda92ba090eca8c64"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53402.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53402","state":"PUBLISHED","datePublished":"2025-09-18T13:58:42.207Z","dateUpdated":"2026-05-11T19:44:16.816Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:54:09.739Z"},"containers":{"cna":{"title":"kernel/printk/index.c: fix memory leak with using debugfs_lookup()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkernel/printk/index.c: fix memory leak with using debugfs_lookup()\n\nWhen calling debugfs_lookup() the result must have dput() called on it,\notherwise the memory will leak over time.  To make things simpler, just\ncall debugfs_lookup_and_remove() instead which handles all of the logic\nat once."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"2e07fa2e30d48d24a791483774a3d4b76769e0cf","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"c578a68ffcdc2e8c72556bebdaae2b7500398e81","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"13969236b6900b5a3625ad2193569588e978f1cc","versionType":"git"},{"version":"337015573718b161891a3473d25f59273f2e626b","status":"affected","lessThan":"55bf243c514553e907efcf2bda92ba090eca8c64","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/printk/index.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.100","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.18","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.5","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/printk/index.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/2e07fa2e30d48d24a791483774a3d4b76769e0cf"},{"url":"https://git.kernel.org/stable/c/c578a68ffcdc2e8c72556bebdaae2b7500398e81"},{"url":"https://git.kernel.org/stable/c/13969236b6900b5a3625ad2193569588e978f1cc"},{"url":"https://git.kernel.org/stable/c/55bf243c514553e907efcf2bda92ba090eca8c64"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:44:16.816Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.3"}]}]}],"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-2023-53402","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T19:01:55.739511Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T19:03:07.053Z"}}]}}}