{"id":"CVE-2026-89846","state":"PUBLISHED","title":"scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target's FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len > par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp->sense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command's sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites.","publishedAt":"2026-09-16T10:31:20.306Z","updatedAt":"2026-10-19T08:53:39.169Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"125b12861c726e58448bb95d55b04851fb131d1f","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"e57ace988bda5693f7b3645f652ea4b4220870ee","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"6b08c0cb110a1fba92f99d655020198489699815","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"be75ab791c9b3baca66c70ce03443afebc83acda","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"ebc41dfc59d190956e0113e8bd90c28f6f21e8b9","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"d7f7746ff031ae45724881261804f4bf5317c985","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"f6e8977bce887481b2b2b0e2e14a791270741cfb","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"ca6d880d6c70cb7946e7b3e05d7285f271b6d99e","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":"2.6.36","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.36","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/125b12861c726e58448bb95d55b04851fb131d1f","https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee","https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815","https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda","https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9","https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985","https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb","https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89846.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89846","state":"PUBLISHED","datePublished":"2026-09-16T10:31:20.306Z","dateUpdated":"2026-10-19T08:53:39.169Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.770Z"},"containers":{"cna":{"title":"scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target's FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len > par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp->sense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command's sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"125b12861c726e58448bb95d55b04851fb131d1f","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"e57ace988bda5693f7b3645f652ea4b4220870ee","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"6b08c0cb110a1fba92f99d655020198489699815","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"be75ab791c9b3baca66c70ce03443afebc83acda","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"ebc41dfc59d190956e0113e8bd90c28f6f21e8b9","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"d7f7746ff031ae45724881261804f4bf5317c985","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"f6e8977bce887481b2b2b0e2e14a791270741cfb","versionType":"git"},{"version":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6","status":"affected","lessThan":"ca6d880d6c70cb7946e7b3e05d7285f271b6d99e","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":"2.6.36","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.36","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/125b12861c726e58448bb95d55b04851fb131d1f"},{"url":"https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee"},{"url":"https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815"},{"url":"https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda"},{"url":"https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"},{"url":"https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985"},{"url":"https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb"},{"url":"https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL"},"scenarios":[{"lang":"en","value":"AV:N - qla2xxx builds initiator status IOCBs from a remote Fibre Channel or FCoE target's FCP_RSP; QLogic CNAs speak FCoE and SAN fabrics are stretched across sites via FCIP/inter-fabric routing, so a malicious or compromised target delivers the crafted rsp_data_len over the storage network with no local access.\nAC:L - A hostile target fully controls FCP_RSP (SS_RESPONSE_INFO_LEN_VALID, rsp_data_len, sense_len, CHECK CONDITION, rsp_info[3]==0) and can return them on ordinary initiator I/O such as INQUIRY during fabric scan; no race, rare config, or victim state beyond a FWI2-capable HBA is required.\nPR:N - Completions are handled in the HBA interrupt/response-queue path (qla24xx_process_response_queue to qla2x00_status_entry) with no Linux credential or capability check; the attacker only needs to act as an FC/FCoE target on the fabric.\nUI:N - Once the target is visible on the fabric, the SCSI midlayer automatically issues commands (scan, path checks, mounted-filesystem I/O) whose STATUS_TYPE completions take the vulnerable path; no user mount, open, or other interactive step is required at exploit time.\nS:U - The out-of-bounds read and any resulting oops stay inside the host kernel that owns the qla2xxx driver and do not cross a VM, IOMMU, or other separate security authority.\nC:H - Attacker-controlled 32-bit rsp_info_len advances sense_data out of the 28-byte IOCB data area and underflows par_sense_len so qla2x00_handle_sense() copies up to SCSI_SENSE_BUFFERSIZE (96) bytes of adjacent response-ring or kernel memory into the command sense buffer, which userspace can read via SCSI completion, SG_IO, and BSG.\nI:N - The memcpy destination is the in-bounds SCSI sense buffer already capped at SCSI_SENSE_BUFFERSIZE; this is a source over-read only, with no out-of-bounds write, use-after-free, or control-flow hijack primitive.\nA:H - Adding a 32-bit attacker-chosen rsp_info_len to sense_data yields a wild kernel pointer; memcpy from an unmapped address in the interrupt-context response-queue path oopses or panics the host, and the target can repeat this on every command."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:53:39.169Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}