Skip to content
OpenAdvisories
Medium ALSA-2026:33226 1 CVE

Moderate: glibc security, bug fix, and enhancement update

Published Jun 29, 2026 · Updated Oct 29, 2026

Summary

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

* glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width (CVE-2026-5450)

Bug Fix(es) and Enhancement(s):

* glibc: counter overflow in __wcsmbs_clone_conv if setlocale is called (JIRA:AlmaLinux-145156)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 215

ReleasePackageFixed in
AlmaLinux · 9 glibc 2.34-272.el9_8
AlmaLinux · 9 glibc-all-langpacks 2.34-272.el9_8
AlmaLinux · 9 glibc-benchtests 2.34-272.el9_8
AlmaLinux · 9 glibc-common 2.34-272.el9_8
AlmaLinux · 9 glibc-devel 2.34-272.el9_8
AlmaLinux · 9 glibc-doc 2.34-272.el9_8
AlmaLinux · 9 glibc-gconv-extra 2.34-272.el9_8
AlmaLinux · 9 glibc-headers 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-aa 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-af 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-agr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ak 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-am 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-an 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-anp 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ar 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-as 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ast 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ayc 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-az 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-be 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bem 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ber 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bg 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bhb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bho 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-br 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-brx 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-bs 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-byn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ca 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ce 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-chr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ckb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-cmn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-crh 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-cs 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-csb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-cv 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-cy 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-da 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-de 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-doi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-dsb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-dv 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-dz 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-el 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-en 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-eo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-es 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-et 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-eu 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fa 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ff 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fil 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fur 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-fy 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ga 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-gd 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-gez 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-gl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-gu 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-gv 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ha 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hak 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-he 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hif 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hne 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hsb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ht 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hu 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-hy 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ia 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-id 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ig 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ik 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-is 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-it 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-iu 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ja 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ka 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kab 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kk 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-km 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ko 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kok 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ks 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ku 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-kw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ky 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lg 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-li 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lij 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ln 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lt 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lv 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-lzh 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mag 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mai 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mfe 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mg 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mhr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-miq 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mjw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mk 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ml 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mni 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mnw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ms 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-mt 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-my 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nan 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nb 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nds 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ne 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nhn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-niu 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-nso 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-oc 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-om 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-or 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-os 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-pa 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-pap 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-pl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ps 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-pt 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-quz 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-raj 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ro 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ru 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-rw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sa 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sah 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sat 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sc 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sd 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-se 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sgs 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-shn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-shs 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-si 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sid 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sk 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sm 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-so 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sq 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ss 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-st 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sv 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-sw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-szl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ta 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tcy 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-te 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tg 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-th 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-the 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ti 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tig 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tk 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tl 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tn 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-to 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tpi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tr 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ts 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-tt 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ug 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-uk 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-unm 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ur 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-uz 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-ve 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-vi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-wa 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-wae 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-wal 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-wo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-xh 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-yi 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-yo 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-yue 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-yuw 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-zh 2.34-272.el9_8
AlmaLinux · 9 glibc-langpack-zu 2.34-272.el9_8
AlmaLinux · 9 glibc-locale-source 2.34-272.el9_8
AlmaLinux · 9 glibc-minimal-langpack 2.34-272.el9_8
AlmaLinux · 9 glibc-nss-devel 2.34-272.el9_8
AlmaLinux · 9 glibc-static 2.34-272.el9_8
AlmaLinux · 9 glibc-utils 2.34-272.el9_8
AlmaLinux · 9 libnsl 2.34-272.el9_8
AlmaLinux · 9 nscd 2.34-272.el9_8
AlmaLinux · 9 nss_db 2.34-272.el9_8
AlmaLinux · 9 nss_hesiod 2.34-272.el9_8

Vulnerabilities 1

  • Critical 9.8

    scanf %mc off-by-one heap buffer overflow

    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 byte heap buffer overflow.

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-5450
  • report
    https://bugzilla.redhat.com/2459853
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-33226.html