CVE-2015-20109

unknown

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

—

Description

end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-20109

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`2.22-1`
debian	bullseye	fixed	`2.22-1`
debian	forky	fixed	`2.22-1`
debian	sid	fixed	`2.22-1`
debian	trixie	fixed	`2.22-1`

References

https://security-tracker.debian.org/tracker/CVE-2015-20109

Verify integrity in audit chain (admin only). AS-IS.