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Red Hat Security Advisory

RHSA-2026:79281

glibc security, bug fix, and enhancement update

Released 2026-10-08 · Red Hat rating Moderate · View on Red Hat →

Fixed in

Fixes 6 records

Priority LOW 29

When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory.

CVSS 4.0MEDIUM 6.6 Network No auth No interaction EPSS 0.0022 Published 2026-08-10 Partial fix CWE-121
Priority LOW 26

Converting crafted EUC_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calling…

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00358 Published 2026-09-15 Partial fix CWE-835
Priority LOW 26

Converting crafted SHIFT_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calli…

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00358 Published 2026-09-15 Partial fix CWE-835
Priority LOW 25

Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may write one pointer past the end of an alloca-allocated array on the stack, which may crash the application.

CVSS 3.1MEDIUM 5.6 Network No auth No interaction EPSS 0.00226 Published 2026-09-14 Partial fix CWE-121
TI-2026-15108 CVE-2026-18374 · GHSA-qg52-8pr2-xj9v

Out-of-bounds write in GNU glibc

Priority LOW 21

Passing an effectively empty string to the `,ccs=` syntax extension of the mode argument in the `fopen` function in the GNU C Library version 2.45 or earlier may result in a heap buffer overflow when the mode string inpu…

CVSS 3.1MEDIUM 4.9 Local No auth No interaction EPSS 0.00144 Published 2026-08-27 Partial fix · 2.45 CWE-787
Priority LOW 10

Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

CVSS 4.0LOW 2.1 Local No auth No interaction EPSS 0.00107 Published 2026-08-10 Partial fix · 2.43 CWE-908