--- id: CVE-2026-89846 title: |- In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_inf… summary: |- In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_inf… severity: critical cvss: 9.1 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H' vendor: Linux product: Linux affected: - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < 125b12861c726e58448bb95d55b04851fb131d1f - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < e57ace988bda5693f7b3645f652ea4b4220870ee - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < 6b08c0cb110a1fba92f99d655020198489699815 - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < be75ab791c9b3baca66c70ce03443afebc83acda - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < ebc41dfc59d190956e0113e8bd90c28f6f21e8b9 - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < d7f7746ff031ae45724881261804f4bf5317c985 - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < f6e8977bce887481b2b2b0e2e14a791270741cfb - >- Linux >= 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 < ca6d880d6c70cb7946e7b3e05d7285f271b6d99e - Linux 2.6.36 published: '2026-09-16' updated: '2026-09-16' sourceUpdated: '2026-09-16T15:18:12.823' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89846' references: - url: 'https://git.kernel.org/stable/c/125b12861c726e58448bb95d55b04851fb131d1f' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89846.json - url: 'https://access.redhat.com/security/cve/CVE-2026-89846' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2535391' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89846' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89846' - url: >- https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89846.mbox - url: 'https://access.redhat.com/errata/RHSA-2026:71213' - url: 'https://access.redhat.com/errata/RHSA-2026:71016' tags: - nvd - cve.org - csaf - vex - red-hat - score-dispute ingestedAt: '2026-09-16T10:53:53.995Z' epss: 0.00695 epssPercentile: 0.51573 patched: - enterprise_linux_baseos_v_8 - enterprise_linux_crb_v_8 - enterprise_linux_nfv_v_8 - enterprise_linux_rt_v_8 cwe: - CWE-125 scores: nvd: 9.1 vendor: 7 --- ## Overview In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPABLE(ha)) { sense_data += rsp_info_len; par_sense_len -= rsp_info_len; } rsp_info_len is a 32-bit value taken directly from the target's FCP response (sf.rsp_data_len), while par_sense_len is the IOCB data area size (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target reporting an rsp_info_len larger than par_sense_len makes the unsigned subtraction underflow to a huge value and advances sense_data out of bounds. The underflowed par_sense_len then defeats the cap in qla2x00_handle_sense(): if (sense_len > par_sense_len) sense_len = par_sense_len; memcpy(cp->sense_buffer, sense_data, sense_len); so the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the out-of-bounds sense_data pointer, leaking adjacent response-ring/heap memory into the command's sense buffer. Clamp rsp_info_len to par_sense_len before the subtraction so par_sense_len can never underflow and sense_data stays within the IOCB data area. The fix sits before the comp_status switch, covering both qla2x00_handle_sense() call sites. ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:71213** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71213) - **RHSA-2026:71016** · Red Hat · fixed in: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8) · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:71016) - **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4, Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89846.json)