Use After Free Affecting kernel-debug-core package, versions <0:4.18.0-193.13.2.el8_2
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-3768148
- published 26 Jul 2021
- disclosed 6 Nov 2019
Introduced: 6 Nov 2019
CVE-2019-19807 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug-core to version 0:4.18.0-193.13.2.el8_2 or higher.
This issue was patched in RHSA-2020:3010.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring.
References
- https://security.netapp.com/advisory/ntap-20200103-0001/
- https://access.redhat.com/security/cve/CVE-2019-19807
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
- https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97
- https://access.redhat.com/errata/RHSA-2020:3010
- https://usn.ubuntu.com/4225-1/
- https://usn.ubuntu.com/4227-1/
- https://usn.ubuntu.com/4227-2/