VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-97529: Linux kernel · scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f75bff451a2fac5aed82f9641df1e9a42c5a899d : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f75bff451a2fac5aed82f9641df1e9a42c5a899d, ef63922d8bdea03de1804af39a6b12212acb1be2, 740f3458a4798af54aaf8cf63e797d407e8b6d3b +2

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 01e0e15c8b3b32e006e5cccac10c8b377ac3d803, < f75bff451a2fac5aed82f9641df1e9a42c5a899d	Fixed in f75bff451a2fac5aed82f9641df1e9a42c5a899d
LinuxLinux	Affected ≥ 01e0e15c8b3b32e006e5cccac10c8b377ac3d803, < ef63922d8bdea03de1804af39a6b12212acb1be2	Fixed in ef63922d8bdea03de1804af39a6b12212acb1be2
LinuxLinux	Affected ≥ 01e0e15c8b3b32e006e5cccac10c8b377ac3d803, < 740f3458a4798af54aaf8cf63e797d407e8b6d3b	Fixed in 740f3458a4798af54aaf8cf63e797d407e8b6d3b
LinuxLinux	Affected ≥ 01e0e15c8b3b32e006e5cccac10c8b377ac3d803, < 5f33efe04658968b6b3f432f904d5f1f74c12286	Fixed in 5f33efe04658968b6b3f432f904d5f1f74c12286
LinuxLinux	Affected ≥ 01e0e15c8b3b32e006e5cccac10c8b377ac3d803, < 4cf38dd9465736141263ebb63375868311a0ec81	Fixed in 4cf38dd9465736141263ebb63375868311a0ec81
LinuxLinux	Affected =4.10	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] The FC BSG transport allocates job->request via memdup_user() using the exact user-supplied request_len. For FC_BSG_HST_VENDOR, fc_bsg_host_dispatch() only guarantees request_len covers msgcode and vendor_id; it does not account for the vendor_cmd[] flexible array. qla2xxx then reads the command selector vendor_cmd[0] and, in several sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor command area without verifying request_len. A caller holding CAP_SYS_RAWIO can submit a short request whose vendor_id matches the host, triggering out-of-bounds heap reads (KASAN-detectable, and able to mis-select a command or panic). Add a central guard in qla2x00_process_vendor_specific() so the selector is always in bounds, restrict the early vendor_cmd[0] read in qla24xx_bsg_request() to sufficiently long vendor messages, and add request_len checks to the sub-handlers that read further: qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(), qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(), qla2x00_update_optrom(), qlafx00_mgmt_cmd() and qla28xx_validate_flash_image().

References

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