CVE-2023-0266
high
KEV
CVSS v3
—
CVSS v4 NEW
—
VIR risk
9.5
Description
Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.
CISA KEV
- Vendor
- Linux
- Product
- Kernel
- Due date
- 2023-04-20
Predictions
Exploit likelihood
99%
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
AlmaLinux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | kernel-devel-matched-5.14.0-162.22.2.el9_1.aarch64.rpm |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 6.2-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 6.1.7-1 |
| sid | Fixed | 6.1.7-1 |
| forky | Fixed | 6.1.7-1 |
| bullseye | Fixed | 5.10.162-1 |
| bookworm | Fixed | 6.1.7-1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
References
- https://access.redhat.com/errata/RHSA-2023:1469
- https://access.redhat.com/errata/RHSA-2023:1470
- https://access.redhat.com/errata/RHSA-2023:1471
- https://errata.rockylinux.org/RXSA-2023:1566
- https://errata.rockylinux.org/RLSA-2023:1584
- https://errata.rockylinux.org/RLSA-2023:1566
- https://www.suse.com/security/cve/CVE-2023-0266.html
- https://errata.rockylinux.org/RLSA-2023:1470
- https://errata.rockylinux.org/RLSA-2023:1469
- https://security-tracker.debian.org/tracker/CVE-2023-0266
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4; https://nvd.nist.gov/vuln/detail/CVE-2023-0266
- https://access.redhat.com/errata/RHSA-2023:1566
- https://bugzilla.redhat.com/2150272
- https://bugzilla.redhat.com/2152548
- https://bugzilla.redhat.com/2159505
- https://bugzilla.redhat.com/2163379
- https://errata.almalinux.org/8/ALSA-2023-1566.html
- https://access.redhat.com/errata/RHSA-2023:1584
- https://errata.almalinux.org/8/ALSA-2023-1584.html
- https://bugzilla.redhat.com/2156322
- https://errata.almalinux.org/9/ALSA-2023-1470.html
- https://errata.almalinux.org/9/ALSA-2023-1469.html
- https://access.redhat.com/errata/RHSA-2023:1659
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.