CVE-2022-47940
HIGHCVSS 8.1/10EPSS 1.39%
Last modified
CVE-2022-47940 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 5.15.145 |
| Linux | Linux Kernel | >= 5.16, < 5.18.18 |
References
- http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=158a66b245739e15858de42c0ba60fcf3de9b8e6Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=158a66b245739e15858de42c0ba60fcf3de9b8e6Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2022-47940?
CVE-2022-47940 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.
How do I fix CVE-2022-47940?
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-2022-47940?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST