Integer Overflow or Wraparound Affecting kernel-debug-core package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-1351842
- published 26 Jul 2021
- disclosed 29 Jan 2021
Introduced: 29 Jan 2021
CVE-2021-20268 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-debug-core.
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.
An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
References
- https://security.netapp.com/advisory/ntap-20210409-0006/
- https://access.redhat.com/security/cve/CVE-2021-20268
- https://bugzilla.redhat.com/show_bug.cgi?id=1923816
- https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA@mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444
- https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444