CVE-2022-43945
No exploitation reported by the sources we read.
- Published2022-11-04
- Fixed in6.0.2 · 5.19.17
- WeaknessCWE-131 · CWE-770
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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
Timeline
dates in UTC- 2022-11-0419:15CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-43945?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-43945?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 6.0 | ≥ 6.0, < 6.0.2 | 6.0.2 | NVD |
| 5.19 | < 5.19.17 | 5.19.17 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
4 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- kernelAlmaLinux:9all versions · fixed in 5.14.0-162.12.1.el9_1and 26 other packages
- kernelAlmaLinux:8all versions · fixed in 4.18.0-425.13.1.el8_7and 23 other packages
- kernel-rtAlmaLinux:9all versions · fixed in 5.14.0-162.12.1.rt21.175.el9_1and 11 other packages
- kernel-rtAlmaLinux:8all versions · fixed in 4.18.0-425.13.1.rt7.223.el8_7and 11 other packages
Fix
- Update Linux linux kernel to 6.0.2 · 5.19.17
Advisories and patches
- git.kernel.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2022-11-04
- Last Modified
- 2026-10-14
- NVD status
- Modified
Frequently asked questions
What is CVE-2022-43945?
Is CVE-2022-43945 actively exploited?
What is the CVSS score for CVE-2022-43945?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.