Use After Free Affecting kernel-rt-core package, versions <0:4.18.0-477.21.1.rt7.284.el8_8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTCORE-5294309
- published 29 Mar 2023
- disclosed 23 Feb 2023
Introduced: 23 Feb 2023
CVE-2023-1281 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-core to version 0:4.18.0-477.21.1.rt7.284.el8_8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-core package and not the kernel-rt-core package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.
References
- https://access.redhat.com/security/cve/CVE-2023-1281
- http://www.openwall.com/lists/oss-security/2023/04/11/3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee059170b1f7e94e55fa6cadee544e176a6e59c2
- https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://security.netapp.com/advisory/ntap-20230427-0004/