CVE-2023-44466

Name: CVE-2023-44466
Creator: NVD / NIST
Published: 2023-09-29T06:15:11.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 54.58%

Last modified Jun 17, 2026

CVE-2023-44466 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 54.58% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

54.58%

98.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.11, < 5.15.121
Linux	Linux Kernel	>= 5.16, < 6.1.40
Linux	Linux Kernel	>= 6.2, < 6.4.5

References

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a282a2f10539dce2aa619e71e1817570d557fc97Mailing List, Patch
https://github.com/google/security-research/security/advisories/GHSA-jg27-jx6w-xwphExploit, Third Party Advisory
https://github.com/torvalds/linux/commit/a282a2f10539dce2aa619e71e1817570d557fc97Patch
https://security.netapp.com/advisory/ntap-20231116-0003/Third Party Advisory
https://www.spinics.net/lists/ceph-devel/msg57909.htmlMailing List, Patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a282a2f10539dce2aa619e71e1817570d557fc97Mailing List, Patch
https://github.com/google/security-research/security/advisories/GHSA-jg27-jx6w-xwphExploit, Third Party Advisory
https://github.com/torvalds/linux/commit/a282a2f10539dce2aa619e71e1817570d557fc97Patch
https://security.netapp.com/advisory/ntap-20231116-0003/Third Party Advisory
https://www.spinics.net/lists/ceph-devel/msg57909.htmlMailing List, Patch

Timeline

Published: Sep 29, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-44466?

How severe is CVE-2023-44466?

CVE-2023-44466 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 54.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-44466?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-44466?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST