Out-of-bounds Read in Linux Kernel
CVE-2022-47940
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.18 before 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the non-padding case in smb2_write.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18 (Patch, Mailing List, Vendor Advisory)
- github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6 (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Vendor Advisory)
- www.openwall.com/lists/oss-security/2022/12/23/10 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-47940?
- CVE-2022-47940 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2022-12-23.
- How severe is CVE-2022-47940?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-47940 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.