Red Hat Linux Security Advisories & CVEs
4452 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
High [CVE-2026-89658] Prevent client use-after-free during NFSv4.0 revoked-state cleanup
Prevent client use-after-free during NFSv4.0 revoked-state cleanup. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; and 1 more. Affected products named by the advisory: Red Hat package: kernel-rt.
High [CVE-2026-89657] validate OSD extent maps before cursor advance
validate OSD extent maps before cursor advance. Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89656] reject buckets with mismatched CRUSH ids
reject buckets with mismatched CRUSH ids. Red Hat rates this important (CVSS 8.8). Weakness: CWE-787. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 2 more. Affected products named by the advisory: Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89654] fix UAF in check_new_map on session freed during unlock
fix UAF in check_new_map() on session freed during unlock. Red Hat rates this moderate (CVSS 7). Weakness: CWE-364. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 2 more. Affected products named by the advisory: Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89655] fix UAF in __kick_flushing_caps on cf entry freed during unlock
fix UAF in __kick_flushing_caps() on cf entry freed during unlock. Red Hat rates this moderate (CVSS 7). Weakness: CWE-366. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 2 more. Affected products named by the advisory: Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89653] reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode
reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode. Red Hat rates this important (CVSS 8.1). Weakness: CWE-787. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89652] bound copied dentry name length in NFS export get_name
bound copied dentry name length in NFS export get_name. Red Hat rates this important (CVSS 7). Weakness: CWE-120. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89651] bound MDSCapAuth path and fs_name decode in handle_session
bound MDSCapAuth path and fs_name decode in handle_session(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89650] bound num_export_targets array for mds info v2/v3
bound num_export_targets array for mds info v2/v3. Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89649] bound xattr value length in __build_xattrs
bound xattr value length in __build_xattrs(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89648] cap delegated inode count in ceph_parse_deleg_inos
cap delegated inode count in ceph_parse_deleg_inos(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-606. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; and 1 more. Affected products named by the advisory: Red Hat package: kernel-rt.
High [CVE-2026-89643] avoid dropping live tree ref on fsnotify rule autoremove
avoid dropping live tree ref on fsnotify rule autoremove. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 3 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89642] call pagecache_isize_extended in cifs_setsize when extending
call pagecache_isize_extended() in cifs_setsize() when extending. Red Hat rates this moderate (CVSS 7). Weakness: CWE-201. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89641] clear tcon after cifsFileInfo_put in cifs_file_set_size
clear tcon after cifsFileInfo_put() in cifs_file_set_size(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89638] clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions
clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions. Red Hat rates this important (CVSS 7.8). Weakness: CWE-281. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 2 more. Affected products named by the advisory: Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89637] fix UAF and buffer leak in cifs_check_trans2 for malformed secondary T2
fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89636] clear ce->tgthint in free_tgts
clear ce->tgthint in free_tgts(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89634] fix ALIGN overflow in symlink_data error context loop
fix ALIGN() overflow in symlink_data() error context loop. Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
High [CVE-2026-89633] fix OOB read/write from unvalidated DataOffset in coalesce_t2
fix OOB read/write from unvalidated DataOffset in coalesce_t2(). Red Hat rates this important (CVSS 8). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.
High [CVE-2026-89632] fix use-before-check of ReparseDataLength in reparse_buf_ptr
fix use-before-check of ReparseDataLength in reparse_buf_ptr(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-125. Affected product named by the advisory: Red Hat OpenShift Container Platform 4.