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
linux: linux kernel; debian: debian linux
References10
- github.com/torvalds/linux/commit/9cb636b5f6a8cc6d1b50809ec8f8d3… PatchThird Party Advisory
- github.com/torvalds/linux/commit/9cb636b5f6a8cc6d1b50809ec8f8d3… PatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/11/msg00001.html Mailing ListThird Party Advisory
- www.debian.org/security/2022/dsa-5257 Third Party Advisory
- lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/11/msg00001.html Mailing ListThird Party Advisory
- www.debian.org/security/2022/dsa-5257 Third Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-794697.html
- cert-portal.siemens.com/productcert/html/ssa-831302.html
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 12 · as of 6 November 2026
- CWE
- CWE-362
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.