CVE-2023-26545 — In the Linux kernel before 6
In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a new location) during the renaming of a device.
Published
2023-02-25T00:00:00.000Z
Last modified
2025-03-20T20:45:02.001Z
01What is this vulnerability?
In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a new location) during the renaming of a device.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-02-25T00:00:00.000Z
- Last modified: 2025-03-20T20:45:02.001Z
09References
- github.com — https://github.com/torvalds/linux/commit/fda6c89fe3d9aca073495a664e1d5aea28cd437…
- git.kernel.org — https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fda6c…
- cdn.kernel.org — https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.13
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230316-0009/
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
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