CVE-2022-40768

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-09-18 · updated 2026-10-14
Weakness: CWE-908

Description

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.

Affected products

Debian Linux: 10.0
Fedoraproject Fedora: 35, 36, 37
Linux kernel: through 5.19.9

References

http://www.openwall.com/lists/oss-security/2022/09/19/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6022f210461fef67e6e676fd8544ca02d1bcfa7a
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/scsi/stex.c
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
https://lore.kernel.org/all/20220908145154.2284098-1-gregkh%40linuxfoundation.org/
https://www.openwall.com/lists/oss-security/2022/09/09/1
http://www.openwall.com/lists/oss-security/2022/09/19/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6022f210461fef67e6e676fd8544ca02d1bcfa7a
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/scsi/stex.c

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