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Red Hat Security Advisory

RHSA-2026:12740

Red Hat Hardened Images RPMs bug fix and enhancement update

Released 2026-05-01 · Red Hat rating Moderate · View on Red Hat →

Fixed in

Fixes 5 records

TI-2026-04772 CVE-2026-5450 · GHSA-v898-xg3c-w4rj

scanf %mc off-by-one heap buffer overflow

Priority HIGH 82

Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one by…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00502 Published 2026-04-20 Partial fix CWE-122
TI-2026-05203 CVE-2026-5928 · GHSA-829p-mc9m-7xhr

Potential buffer under-read in ungetwc

Priority HIGH 72

Calling the ungetwc function on a FILE stream with wide characters encoded in a character set that has overlaps between its single byte and multi-byte character encodings, in the GNU C Library version 2.43 or earlier, ma…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00369 Published 2026-04-20 Partial fix CWE-127
Priority HIGH 72

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an applicat…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00389 Published 2026-03-30 Partial fix CWE-617
Priority LOW 38

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG rec…

CVSS 3.1HIGH 7.3 Network No auth No interaction EPSS 0.00237 Published 2026-04-28 Partial fix CWE-787
Priority LOW 35

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the RDATA content against the RDATA length in a DNS response when processing A6, CERT, LO…

CVSS 3.1MEDIUM 6.5 Network No auth No interaction EPSS 0.00358 Published 2026-04-28 Fixed CWE-126