{"id":"CVE-2023-53476","state":"PUBLISHED","title":"iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()\n\nThis condition needs to match the previous \"if (epcp->state == LISTEN) {\"\nexactly to avoid a NULL dereference of either \"listen_ep\" or \"ep\". The\nproblem is that \"epcp\" has been re-assigned so just testing\n\"if (epcp->state == LISTEN) {\" a second time is not sufficient.","publishedAt":"2025-10-01T11:42:45.499Z","updatedAt":"2026-05-11T19:45:43.579Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"76e0396313c79ecd0df44ee3c18745cfac52b3e6","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"24278dc380aab6a1aef0a75317f57ad4c2453cf6","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"dd55240e4364d64befcc575b0d33091881524f42","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"4ca446b127c568b59cb8d9748b6f70499624bb18","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/restrack.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.18","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.3","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/infiniband/hw/cxgb4/restrack.c"]}],"references":["https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6","https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6","https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42","https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53476.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53476","state":"PUBLISHED","datePublished":"2025-10-01T11:42:45.499Z","dateUpdated":"2026-05-11T19:45:43.579Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-01T11:39:39.401Z"},"containers":{"cna":{"title":"iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()\n\nThis condition needs to match the previous \"if (epcp->state == LISTEN) {\"\nexactly to avoid a NULL dereference of either \"listen_ep\" or \"ep\". The\nproblem is that \"epcp\" has been re-assigned so just testing\n\"if (epcp->state == LISTEN) {\" a second time is not sufficient."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"76e0396313c79ecd0df44ee3c18745cfac52b3e6","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"24278dc380aab6a1aef0a75317f57ad4c2453cf6","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"dd55240e4364d64befcc575b0d33091881524f42","versionType":"git"},{"version":"116aeb8873712ea559d26b0d9d88147af5c88db5","status":"affected","lessThan":"4ca446b127c568b59cb8d9748b6f70499624bb18","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/restrack.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.18","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.3","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/infiniband/hw/cxgb4/restrack.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6"},{"url":"https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6"},{"url":"https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42"},{"url":"https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:45:43.579Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"5.15.99"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.1.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}