CVE-2022-49279: NFSD: prevent integer overflow on 32 bit systems
Vulnerability summary
CVE-2022-49279 is a high (CVSS 8.2) Integer Overflow or Wraparound vulnerability in linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 50% of scored vulnerabilities.
Severe, CVSS 8.2 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent integer overflow on 32 bit systems On a 32 bit system, the "len * sizeof(*p)" operation can have an integer overflow.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.63%
Chance of exploitation in the next 30 days
Percentile
50%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.63% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu102 products
- linux< 5.4.0-117.132 | < 5.15.0-37.39
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1078.84 | < 5.15.0-1011.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < 3a2789e8ccb4a3e2a631f6817a2d3bb98b8c4fd8 | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < ce1aa09cc14ed625104acc2d487bd92b9a88efe2 | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < 7af164fa2f1abc577d357d22d83a2f3490875d7e | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < 303cd6173dce0a28d26526c77814eb90a41bd898 | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < 79b1c54fc6ce09ee0d5fe088bb3de26ae2150e3c | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < e4195d27306ea468a6dc3a27af6f586709951229 | ≥ 37c88763def8474bc0972fbd1adb0d21670104b7, < 23a9dbbe0faf124fc4c139615633b9d12a3a89ef | 4.17
- linux_kernel< 4.19.238 | ≥ 4.20, < 5.4.189 | ≥ 5.5, < 5.10.110 | ≥ 5.11, < 5.15.33 | ≥ 5.16, < 5.16.19 | ≥ 5.17, < 5.17.2
Debian1 product
- linux< 5.17.3-1
3 vendors · 105 products
