{"id":"CVE-2026-93242","state":"PUBLISHED","title":"scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()\n\nqla24xx_process_response_queue() advances ring_ptr past the head IOCB\nbefore dispatching, so by the time __qla_consume_iocb() runs, ring_ptr\nalready points at the first continuation IOCB. The function however\nlooped purex->entry_count times starting at ring_ptr. As entry_count\nincludes the head, this consumed one entry too many: it stamped\nRESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring\npast it, silently dropping a legitimate firmware response. The head\nIOCB's signature was also never marked.\n\nMark the head processed and account for it, then consume only the\nentry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer().","publishedAt":"2026-09-24T15:40:26.570Z","updatedAt":"2026-10-19T09:07:53.904Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"a136c311676fd1010b1bde3bcfd410caa2fa040f","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"d841707fafba5f80341b82e8c3a4c24fc5aa5132","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"6e3f129538c32d0019437197735912308c161843","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"bd1534d4afab47f13dfc27fff6f59dd859a0ac3a","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"31715d1e1cbf3a37ce3452635c5602f73fd7abd4","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"df86c27cf1ba9d66f737a1fa56479c6e7efafe4e","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"3ba019bdd89d931499d9476456b5d9c7ab7fa753","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"]}],"references":["https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f","https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132","https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843","https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a","https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4","https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e","https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93242.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93242","state":"PUBLISHED","datePublished":"2026-09-24T15:40:26.570Z","dateUpdated":"2026-10-19T09:07:53.904Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.095Z"},"containers":{"cna":{"title":"scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()\n\nqla24xx_process_response_queue() advances ring_ptr past the head IOCB\nbefore dispatching, so by the time __qla_consume_iocb() runs, ring_ptr\nalready points at the first continuation IOCB. The function however\nlooped purex->entry_count times starting at ring_ptr. As entry_count\nincludes the head, this consumed one entry too many: it stamped\nRESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring\npast it, silently dropping a legitimate firmware response. The head\nIOCB's signature was also never marked.\n\nMark the head processed and account for it, then consume only the\nentry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"a136c311676fd1010b1bde3bcfd410caa2fa040f","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"d841707fafba5f80341b82e8c3a4c24fc5aa5132","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"6e3f129538c32d0019437197735912308c161843","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"bd1534d4afab47f13dfc27fff6f59dd859a0ac3a","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"31715d1e1cbf3a37ce3452635c5602f73fd7abd4","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"df86c27cf1ba9d66f737a1fa56479c6e7efafe4e","versionType":"git"},{"version":"fac2807946c10b9a509b9c348afd442fa823c5f7","status":"affected","lessThan":"3ba019bdd89d931499d9476456b5d9c7ab7fa753","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_isr.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a136c311676fd1010b1bde3bcfd410caa2fa040f"},{"url":"https://git.kernel.org/stable/c/d841707fafba5f80341b82e8c3a4c24fc5aa5132"},{"url":"https://git.kernel.org/stable/c/6e3f129538c32d0019437197735912308c161843"},{"url":"https://git.kernel.org/stable/c/bd1534d4afab47f13dfc27fff6f59dd859a0ac3a"},{"url":"https://git.kernel.org/stable/c/31715d1e1cbf3a37ce3452635c5602f73fd7abd4"},{"url":"https://git.kernel.org/stable/c/df86c27cf1ba9d66f737a1fa56479c6e7efafe4e"},{"url":"https://git.kernel.org/stable/c/3ba019bdd89d931499d9476456b5d9c7ab7fa753"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:07:53.904Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}