Use After Free Affecting kernel-debug-modules package, versions <0:4.18.0-425.3.1.el8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGMODULES-4335236
- published 1 Apr 2022
- disclosed 31 Jan 2022
Introduced: 31 Jan 2022
CVE-2022-1055 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug-modules to version 0:4.18.0-425.3.1.el8 or higher.
This issue was patched in RHSA-2022:7683.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules package and not the kernel-debug-modules package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
References
- https://access.redhat.com/security/cve/CVE-2022-1055
- https://access.redhat.com/errata/RHSA-2022:7683
- http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
- https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
- https://security.netapp.com/advisory/ntap-20220506-0007/
- https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc