CVE-2022-47943

Description

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.85% Top 30%
Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 mailing list patch vendor advisory
https://github.com/torvalds/linux/commit/ac60778b87e45576d7bfdbd6f53df902654e6f09 third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac60778b87e45576d7bfdbd6f53df902654e6f09 mailing list patch vendor advisory
http://www.openwall.com/lists/oss-security/2022/12/23/10 third party advisory mailing list
https://www.zerodayinitiative.com/advisories/ZDI-22-1691/ vdb entry third party advisory
https://security.netapp.com/advisory/ntap-20230216-0006/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-47943?
CVE-2022-47943 has been scored as a high severity vulnerability.
How to fix CVE-2022-47943?
To fix CVE-2022-47943, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-47943 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-47943 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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