9.8

CVE-2022-49362: NFSD: Fix potential use-after-free in nfsd_file_put()

Modified
AliasesUBUNTU-CVE-2022-49362DEBIAN-CVE-2022-49362
Published 26-02-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-49362 is a critical (CVSS 9.8) Use After Free vulnerability in linux. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 51.2% 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
0.65%
0%100%
Low · -0.01 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 3 · Related 2
RHSA-2023:2458SUSE-SU-2025:1176-1SUSE-SU-2025:1241-1

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: Fix potential use-after-free in nfsd_file_put() nfsd_file_put_noref() can free @nf, so don't dereference @nf immediately upon return from nfsd_file_put_noref().

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.66% 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.

Ubuntu77 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 9862064ca81f9b9da8ebe26c86cf2b10c293ba1a, < ada1757b259f353cade47037ee0a0249b4cddad3 | ≥ a98e5b3d958ac697aafb3d077eb2cca4a731b7ee, < 261eabe19cb28e4a8587a4442d257b543d7c2d57 | ≥ 999397926ab3f78c7d1235cc4ca6e3c89d2769bf, < 333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57 | ≥ 999397926ab3f78c7d1235cc4ca6e3c89d2769bf, < b6c71c66b0ad8f2b59d9bc08c7a5079b110bec01 | 5.18
  • linux_kernel≥ 5.18, < 5.18.4 | 5.19:rc1
Debian1 product
  • linux< 5.18.5-1

3 vendors · 80 products

References

8 links