CVE-2022-40307

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-09-09 · updated 2026-10-14
Weakness: CWE-362

Description

An issue was discovered in the Linux kernel through 5.19.8. drivers/firmware/efi/capsule-loader.c has a race condition with a resultant use-after-free.

Affected products

Debian Linux: 10.0, 11.0
Linux kernel: through 5.19.8

References

https://github.com/torvalds/linux/commit/9cb636b5f6a8cc6d1b50809ec8f8d33ae0c84c95
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://www.debian.org/security/2022/dsa-5257
https://github.com/torvalds/linux/commit/9cb636b5f6a8cc6d1b50809ec8f8d33ae0c84c95
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://www.debian.org/security/2022/dsa-5257
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html

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