CVE-2022-43945
linux - security update
Description
The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
How to fix CVE-2022-43945
To remediate CVE-2022-43945, upgrade the affected package to a fixed version below.
- —upgrade to 5.10.221-1 or later
- —upgrade to 5.10.221-1 or later
Is CVE-2022-43945 being exploited?
Moderate — EPSS is 21.3%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 5.10.221-1
- from 0, < 5.10.221-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |