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GLIBC-SA-2026-0023 on Cyberus Linux 26.05

Aliases: GLIBC-SA-2026-0023, CVE-2026-95818

Packages: glibc

Status: In Progress

Advisory Information

AT_SECURE program buffer overflow via $ORIGIN processing

A stack-based buffer overflow in the dynamic loader (ld.so) of the GNU C
Library (glibc) versions 2.14 through 2.44 allows a local attacker to
crash or corrupt the memory of setuid/setgid (AT_SECURE) programs.

When such a program's DT_RPATH or DT_RUNPATH begins with $ORIGIN and is
followed by NUL or '/' the loader both reads past the end of the path
buffer and writes past the end of a stack-allocated internal buffer.
The corrupted loader stack can lead to a loader crash (denial of
service) and limited disclosure of process memory.

CVE-Id: CVE-2026-95818
Public-Date: 2026-08-14
Vulnerable-Commit: 47c3cd7a74e8c089d60d603afce6d9cf661178d6 (2.13-113)
Fix-Commit: ed0c137b97eb940b4b64981e84ed806d3276edd9 (2.45)
Reported-by: AISLE in partnership with Red Hat
CVSS: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - 3.6

Updates

2026-10-09 16:28 CEST

Metadata changes:

  • Status for package glibc: “In Progress” (31fee2d1fdfd35ff81631b022887d6999296aaf9)

2026-09-24 17:47 CEST

Metadata changes:

  • Status for package glibc: “Plausible”

2026-09-24 17:29 CEST

Metadata changes:

  • Status for package glibc: “New”