CVE-2025-21764
high
CVSS v3
7.8
CVSS v4 NEW
—
VIR risk
7.8
Description
RHSA-2025:9581: kernel-rt security update (Moderate)
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.129-1 |
| debian | bullseye | fixed | 5.10.237-1 |
| debian | forky | fixed | 6.12.16-1 |
| debian | sid | fixed | 6.12.16-1 |
| debian | trixie | fixed | 6.12.16-1 |
| linux-kernel | affected | 5.4.291 | |
| linux-kernel | 6.14 | affected | |
| almalinux | 9 | fixed | kernel-64k-devel-matched-5.14.0-570.19.1.el9_6.aarch64.rpm |
| rocky | 9 | fixed | |
| rhel | 8 | fixed | |
References
- https://access.redhat.com/errata/RHSA-2025:8333
- https://git.kernel.org/stable/c/3c2d705f5adf5d860aaef90cb4211c0fde2ba66d
- https://git.kernel.org/stable/c/628e6d18930bbd21f2d4562228afe27694f66da9
- https://git.kernel.org/stable/c/96fc896d0e5b37c12808df797397fb16f3080879
- https://git.kernel.org/stable/c/9e0ec817eb41a55327a46cd3ce331a9868d60304
- https://git.kernel.org/stable/c/b870256dd2a5648d5ed2f22316b3ac29a7e5ed63
- https://git.kernel.org/stable/c/bbec88e4108e8d6fb468d3817fa652140a44ff28
- https://git.kernel.org/stable/c/c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1
- https://git.kernel.org/stable/c/cd1065f92eb7ff21b9ba5308a86f33d1670bf926
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://errata.rockylinux.org/RLSA-2025:9581
- https://errata.rockylinux.org/RLSA-2025:9580
- https://www.suse.com/security/cve/CVE-2025-21764.html
- https://security-tracker.debian.org/tracker/CVE-2025-21764
- https://bugzilla.redhat.com/2132640
- https://bugzilla.redhat.com/2348575
- https://errata.almalinux.org/9/ALSA-2025-8333.html
- https://access.redhat.com/errata/RHSA-2025:9580
- https://bugzilla.redhat.com/2327188
- https://bugzilla.redhat.com/2327347
- https://errata.almalinux.org/8/ALSA-2025-9580.html
- https://access.redhat.com/errata/RHSA-2025:9581
- https://errata.almalinux.org/8/ALSA-2025-9581.html
CWEs
CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.