{"id":"CVE-2023-53173","state":"PUBLISHED","title":"tty: pcn_uart: fix memory leak with using debugfs_lookup()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: pcn_uart: 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":"2025-09-15T14:04:07.411Z","updatedAt":"2026-05-11T19:39:41.016Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"cf042964c2fa72950bbbf25b2cdd732b873e89db","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"4459d1e7bd0421b3b6fcd745773d8823f71615ef","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"139769c4bd8273b5e3f85ea474aa37018fe7e436","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"04a189c720aa2b6091442113ce9b9bc93552dff8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","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":["drivers/tty/serial/pch_uart.c"]}],"references":["https://git.kernel.org/stable/c/cf042964c2fa72950bbbf25b2cdd732b873e89db","https://git.kernel.org/stable/c/4459d1e7bd0421b3b6fcd745773d8823f71615ef","https://git.kernel.org/stable/c/139769c4bd8273b5e3f85ea474aa37018fe7e436","https://git.kernel.org/stable/c/04a189c720aa2b6091442113ce9b9bc93552dff8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53173.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53173","state":"PUBLISHED","datePublished":"2025-09-15T14:04:07.411Z","dateUpdated":"2026-05-11T19:39:41.016Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-15T13:59:19.064Z"},"containers":{"cna":{"title":"tty: pcn_uart: fix memory leak with using debugfs_lookup()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: pcn_uart: 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":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"cf042964c2fa72950bbbf25b2cdd732b873e89db","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"4459d1e7bd0421b3b6fcd745773d8823f71615ef","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"139769c4bd8273b5e3f85ea474aa37018fe7e436","versionType":"git"},{"version":"4dec5f1af694526db760dfbb47211236e556e27c","status":"affected","lessThan":"04a189c720aa2b6091442113ce9b9bc93552dff8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/pch_uart.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","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":["drivers/tty/serial/pch_uart.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cf042964c2fa72950bbbf25b2cdd732b873e89db"},{"url":"https://git.kernel.org/stable/c/4459d1e7bd0421b3b6fcd745773d8823f71615ef"},{"url":"https://git.kernel.org/stable/c/139769c4bd8273b5e3f85ea474aa37018fe7e436"},{"url":"https://git.kernel.org/stable/c/04a189c720aa2b6091442113ce9b9bc93552dff8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:39:41.016Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}