CVE-2023-44466 — An issue was discovered in net/ceph/messenger_v2
An issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5. There is an integer signedness error, leading to a buffer overflow and remote code execution via HELLO or one of the AUTH frames. This occurs because of an untrusted length taken from a TCP packe
Published
2023-09-29T00:00:00.000Z
Last modified
2024-08-02T20:07:33.225Z
01What is this vulnerability?
An issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5. There is an integer signedness error, leading to a buffer overflow and remote code execution via HELLO or one of the AUTH frames. This occurs because of an untrusted length taken from a TCP packet in ceph_decode_32.
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: 2023-09-29T00:00:00.000Z
- Last modified: 2024-08-02T20:07:33.225Z
09References
- github.com — https://github.com/google/security-research/security/advisories/GHSA-jg27-jx6w-x…
- www.spinics.net — https://www.spinics.net/lists/ceph-devel/msg57909.html
- github.com — https://github.com/torvalds/linux/commit/a282a2f10539dce2aa619e71e1817570d557fc9…
- git.kernel.org — https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a282a…
- security.netapp.com — https://security.netapp.com/advisory/ntap-20231116-0003/
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