9.8

CVE-2022-49280: NFSD: prevent underflow in nfssvc_decode_writeargs()

Modified
AliasesUBUNTU-CVE-2022-49280DEBIAN-CVE-2022-49280
Published 26-02-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-49280 is a critical (CVSS 9.8) Integer Underflow (Wrap or Wraparound) vulnerability in linux. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2025:1027-1SUSE-SU-2025:1176-1SUSE-SU-2025:1183-1SUSE-SU-2025:1194-1SUSE-SU-2025:1241-1SUSE-SU-2025:1263-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvc_decode_writeargs() Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvc_decode_writeargs() warn: no lower bound on 'args->len' Change the type to unsigned to prevent this issue.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.69% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu89 products
  • linux< 5.15.0-37.39
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1011.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ a51b5b737a0be93fae6ea2a18df03ab2359a3f4b, < 614a61e1592051cc42d3c38f899c9f7bdaad8a1d | ≥ a51b5b737a0be93fae6ea2a18df03ab2359a3f4b, < 2764af8ce0bf03cc43ee4a11897cab96bde6caae | ≥ a51b5b737a0be93fae6ea2a18df03ab2359a3f4b, < 413d8fefafe531a9442bb623e3fe292a38f88d65 | ≥ a51b5b737a0be93fae6ea2a18df03ab2359a3f4b, < 184416d4b98509fb4c3d8fc3d6dc1437896cc159 | 5.12
  • linux_kernel< 4.9.311 | ≥ 4.10, < 4.14.276 | ≥ 4.15, < 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 · 92 products

References

13 links
Show all 13 references