Buffer overflow in Linux Kernel
CVE-2023-44466
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.456 (98.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.453 · newest: 0.456 · change: +0.003
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/google/security-research/security/advisories/GHSA-jg27-jx6w-xwph (Exploit, Third Party Advisory)
- www.spinics.net/lists/ceph-devel/msg57909.html (Patch, Mailing List)
- github.com/torvalds/linux/commit/a282a2f10539dce2aa619e71e1817570d557fc97 (Patch)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List)
- security.netapp.com/advisory/ntap-20231116-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-44466?
- CVE-2023-44466 is a high-severity vulnerability in Linux Kernel, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-09-29.
- How severe is CVE-2023-44466?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-44466 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.