CVE-2018-1000001

high

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

8.0

Description

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

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-2018-1000001

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201801-19

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201801-18

OS impact

OS	Version	Status	Fixed in
arch		fixed	`2.26-11`
debian	bookworm	fixed	`2.26-4`
debian	bullseye	fixed	`2.26-4`
debian	forky	fixed	`2.26-4`
debian	sid	fixed	`2.26-4`
debian	trixie	fixed	`2.26-4`

References

https://security.archlinux.org/ASA-201801-18
https://security.archlinux.org/ASA-201801-19
https://security-tracker.debian.org/tracker/CVE-2018-1000001

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