{"id":"CVE-2026-89852","state":"PUBLISHED","title":"scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()\n\nThe mbx_cmd_t is allocated on the stack but left uninitialized.\nqla2x00_mailbox_command() has several early-return paths (PCI permanent\nfailure, device failed, EEH busy, ISP abort pending, mailbox access\ntimeout, purge mbox) that return without writing the input mailbox\nregisters back into mcp->mb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's\nstates[] array regardless of the return value.\n\nOn such a failure the copied values are uninitialized kernel stack\nmemory, which is then exposed to userspace via the fw_state and\nmpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query\nyields deterministic zeroed state instead of leaking stack contents.","publishedAt":"2026-09-16T10:31:26.012Z","updatedAt":"2026-10-19T08:53:45.110Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"f8fc5cc6b3284506c6ab83c822c48133377668bb","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"f29695b1138ae2539c5cd6cdaba9b1b072aaa81a","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"13d645a2cdb224d27205368f3e3c68bb160daf97","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"2f847f06bb223aa895eea91fc9e5e2d6314038eb","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"e6cfb1ee18336aab41a0941d6d3ea5009aaafc05","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"9f31de4d07e4cde91dfc24522993a5fbb4d67083","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"9efaa782845b4d5fb3e01242be0d06ebc7428d8f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_mbx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.26","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.26","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_mbx.c"]}],"references":["https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb","https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a","https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97","https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb","https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79","https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05","https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083","https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89852","state":"PUBLISHED","datePublished":"2026-09-16T10:31:26.012Z","dateUpdated":"2026-10-19T08:53:45.110Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.770Z"},"containers":{"cna":{"title":"scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()\n\nThe mbx_cmd_t is allocated on the stack but left uninitialized.\nqla2x00_mailbox_command() has several early-return paths (PCI permanent\nfailure, device failed, EEH busy, ISP abort pending, mailbox access\ntimeout, purge mbox) that return without writing the input mailbox\nregisters back into mcp->mb[]. qla2x00_get_firmware_state() then\nunconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's\nstates[] array regardless of the return value.\n\nOn such a failure the copied values are uninitialized kernel stack\nmemory, which is then exposed to userspace via the fw_state and\nmpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query\nyields deterministic zeroed state instead of leaking stack contents."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"f8fc5cc6b3284506c6ab83c822c48133377668bb","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"f29695b1138ae2539c5cd6cdaba9b1b072aaa81a","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"13d645a2cdb224d27205368f3e3c68bb160daf97","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"2f847f06bb223aa895eea91fc9e5e2d6314038eb","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"e6cfb1ee18336aab41a0941d6d3ea5009aaafc05","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"9f31de4d07e4cde91dfc24522993a5fbb4d67083","versionType":"git"},{"version":"4d4df1932b6b116aecc81039066fec27f2050762","status":"affected","lessThan":"9efaa782845b4d5fb3e01242be0d06ebc7428d8f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_mbx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.26","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.26","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_mbx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f8fc5cc6b3284506c6ab83c822c48133377668bb"},{"url":"https://git.kernel.org/stable/c/f29695b1138ae2539c5cd6cdaba9b1b072aaa81a"},{"url":"https://git.kernel.org/stable/c/13d645a2cdb224d27205368f3e3c68bb160daf97"},{"url":"https://git.kernel.org/stable/c/2f847f06bb223aa895eea91fc9e5e2d6314038eb"},{"url":"https://git.kernel.org/stable/c/1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79"},{"url":"https://git.kernel.org/stable/c/e6cfb1ee18336aab41a0941d6d3ea5009aaafc05"},{"url":"https://git.kernel.org/stable/c/9f31de4d07e4cde91dfc24522993a5fbb4d67083"},{"url":"https://git.kernel.org/stable/c/9efaa782845b4d5fb3e01242be0d06ebc7428d8f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:53:45.110Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.26","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}