{"id":"CVE-2026-89845","state":"PUBLISHED","title":"scsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()\n\nqla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL\ncheck and again when assigning it to req. The map slot is cleared by\nqla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock)\nduring queue teardown, while the response-queue interrupt that drives\nqla2x00_error_entry() is still registered (the IRQ is released later in\nqla25xx_free_rsp_que()). If the slot is set to NULL between the two\nreads, req becomes NULL and is dereferenced.\n\nRead the slot once into req and NULL-check the local before use. mq_lock\nis a mutex and cannot be taken from interrupt context, so the single\nread plus local check is the appropriate fix for the reported NULL\ndereference.","publishedAt":"2026-09-16T10:31:19.374Z","updatedAt":"2026-10-19T08:53:38.186Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"c845f2597787ef70159a32566669e308b2807a56","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"fe04b31e386aee4cc3a18f07462af146037dc389","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"1b995cf4157465357d66ba096e7cdaafab9972e7","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"d79376fbd2a076de82c1cd8aa0b600b300c75a44","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"1c90b74e484ba48f31944fe04963d99e01ac3767","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"5dd9bec8004ba93cee8b689bf54ce294f59e5e3c","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"35124cfa9898b2088ee72859e573e0876aff66fc","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"deb8abde83a799d2501f3977f6d6051000253f5e","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":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","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/c845f2597787ef70159a32566669e308b2807a56","https://git.kernel.org/stable/c/fe04b31e386aee4cc3a18f07462af146037dc389","https://git.kernel.org/stable/c/1b995cf4157465357d66ba096e7cdaafab9972e7","https://git.kernel.org/stable/c/d79376fbd2a076de82c1cd8aa0b600b300c75a44","https://git.kernel.org/stable/c/1c90b74e484ba48f31944fe04963d99e01ac3767","https://git.kernel.org/stable/c/5dd9bec8004ba93cee8b689bf54ce294f59e5e3c","https://git.kernel.org/stable/c/35124cfa9898b2088ee72859e573e0876aff66fc","https://git.kernel.org/stable/c/deb8abde83a799d2501f3977f6d6051000253f5e"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89845.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89845","state":"PUBLISHED","datePublished":"2026-09-16T10:31:19.374Z","dateUpdated":"2026-10-19T08:53:38.186Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.770Z"},"containers":{"cna":{"title":"scsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()\n\nqla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL\ncheck and again when assigning it to req. The map slot is cleared by\nqla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock)\nduring queue teardown, while the response-queue interrupt that drives\nqla2x00_error_entry() is still registered (the IRQ is released later in\nqla25xx_free_rsp_que()). If the slot is set to NULL between the two\nreads, req becomes NULL and is dereferenced.\n\nRead the slot once into req and NULL-check the local before use. mq_lock\nis a mutex and cannot be taken from interrupt context, so the single\nread plus local check is the appropriate fix for the reported NULL\ndereference."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"c845f2597787ef70159a32566669e308b2807a56","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"fe04b31e386aee4cc3a18f07462af146037dc389","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"1b995cf4157465357d66ba096e7cdaafab9972e7","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"d79376fbd2a076de82c1cd8aa0b600b300c75a44","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"1c90b74e484ba48f31944fe04963d99e01ac3767","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"5dd9bec8004ba93cee8b689bf54ce294f59e5e3c","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"35124cfa9898b2088ee72859e573e0876aff66fc","versionType":"git"},{"version":"a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b","status":"affected","lessThan":"deb8abde83a799d2501f3977f6d6051000253f5e","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":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","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/c845f2597787ef70159a32566669e308b2807a56"},{"url":"https://git.kernel.org/stable/c/fe04b31e386aee4cc3a18f07462af146037dc389"},{"url":"https://git.kernel.org/stable/c/1b995cf4157465357d66ba096e7cdaafab9972e7"},{"url":"https://git.kernel.org/stable/c/d79376fbd2a076de82c1cd8aa0b600b300c75a44"},{"url":"https://git.kernel.org/stable/c/1c90b74e484ba48f31944fe04963d99e01ac3767"},{"url":"https://git.kernel.org/stable/c/5dd9bec8004ba93cee8b689bf54ce294f59e5e3c"},{"url":"https://git.kernel.org/stable/c/35124cfa9898b2088ee72859e573e0876aff66fc"},{"url":"https://git.kernel.org/stable/c/deb8abde83a799d2501f3977f6d6051000253f5e"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:53:38.186Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}