CVE-2022-41218

Summary

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 Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• https://lore.kernel.org/all/20220908132754.30532-1-tiwai%40suse.de/
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/dvb-core/dmxdev.c
• http://www.openwall.com/lists/oss-security/2022/09/23/4
• http://www.openwall.com/lists/oss-security/2022/09/24/2
• http://www.openwall.com/lists/oss-security/2022/09/24/1
• https://www.debian.org/security/2023/dsa-5324
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fd3d91ab1c6ab0628fe642dd570b56302c30a792

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://lore.kernel.org/all/20220908132754.30532-1-tiwai%40suse.de/
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/dvb-core/dmxdev.c
• http://www.openwall.com/lists/oss-security/2022/09/23/4
• http://www.openwall.com/lists/oss-security/2022/09/24/2
• http://www.openwall.com/lists/oss-security/2022/09/24/1
• https://www.debian.org/security/2023/dsa-5324
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fd3d91ab1c6ab0628fe642dd570b56302c30a792

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