Description
In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused by refcount races, affecting dvb_demux_open and dvb_dmxdev_release.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/… Vendor Advisory
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/… Vendor Advisory
- www.openwall.com/lists/oss-security/2022/09/23/4 ExploitMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/09/24/1 ExploitMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/09/23/4 ExploitMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/09/24/1 ExploitMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/09/24/2 Mailing ListThird Party Advisory
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/…
- lists.debian.org/debian-lts-announce/2023/03/msg00000.html
- lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 58 · as of 12 November 2026
- CWE
- CWE-416
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.