CVE-2026-89846scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read
- 9.1CriticalCVSS base score
- 0.71%Exploitation in 30 daysEPSS · top 46% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.71% · top 46% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < 125b12861c726e58448bb95d55b04851fb131d1f
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < e57ace988bda5693f7b3645f652ea4b4220870ee
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < 6b08c0cb110a1fba92f99d655020198489699815
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < be75ab791c9b3baca66c70ce03443afebc83acda
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < ebc41dfc59d190956e0113e8bd90c28f6f21e8b9
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < d7f7746ff031ae45724881261804f4bf5317c985
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < f6e8977bce887481b2b2b0e2e14a791270741cfb
- affected 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 – < ca6d880d6c70cb7946e7b3e05d7285f271b6d99e
- affected 2.6.36
- unaffected < 2.6.36
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/125b12861c726e58448bb95d55b04851fb131d1f (opens in a new tab)
- https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee (opens in a new tab)
- https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815 (opens in a new tab)
- https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda (opens in a new tab)
- https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9 (opens in a new tab)
- https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985 (opens in a new tab)
- https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb (opens in a new tab)
- https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80446 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-89846)Record last updated .