CVE-2021-20268 log

Source	CVE Red Hat MITRE NVD Debian Ubuntu SUSE Alpine Mageia CVE Details CIRCL Bugs Arch Linux Red Hat Gentoo SUSE GitHub Lists oss-security full-disclosure bugtraq Misc GitHub code web search
Severity	Medium
Remote	No
Type	Privilege escalation
Description	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.

Group	Package	Affected	Fixed	Severity	Status	Ticket
AVG-1666	linux	5.11.5.arch1-1		Medium	Not affected

References
https://bugzilla.redhat.com/show_bug.cgi?id=1923816 https://www.zerodayinitiative.com/advisories/ZDI-21-101/ https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA@mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444

References

https://bugzilla.redhat.com/show_bug.cgi?id=1923816
https://www.zerodayinitiative.com/advisories/ZDI-21-101/
https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA@mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444

Notes
The issue only affects 32-bit architectures.