CVE-2022-40768 — drivers/scsi/stex

drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

01What is this vulnerability?

drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-18T05:15:08.860
• Last modified: 2026-10-14T18:17:05.703

09References

• www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/19/1
• git.kernel.org — https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6022f…
• git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/s…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lore.kernel.org — https://lore.kernel.org/all/20220908145154.2284098-1-gregkh%40linuxfoundation.or…
• www.openwall.com — https://www.openwall.com/lists/oss-security/2022/09/09/1
• www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/19/1