9.8

CVE-2022-50235: NFSD: Protect against send buffer overflow in NFSv2 READDIR

Modified
AliasesUBUNTU-CVE-2022-50235DEBIAN-CVE-2022-50235
Published 15-09-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50235 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 37.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.43%
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 10 · Related 7
RHSA-2023:0832RHSA-2023:2458RHSA-2023:2951SUSE-SU-2025:03613-1SUSE-SU-2025:03614-1SUSE-SU-2025:03615-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READDIR Restore the previous limit on the @count argument to prevent a buffer overflow attack.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.42% 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.

Ubuntu101 products
  • linux< 5.15.0-56.62
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1026.30
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 9e291a6a28d32545ed2fd959a8165144d1724df1, < 0e57d696f60dee6117a8ace0cac7c5761d375277 | ≥ eabc0aab98e5218ceecd82069b0d6fdfff5ee885, < dc7f225090c29a5f3b9419b1af32846a201555e7 | ≥ 53b1119a6e5028b125f431a0116ba73510d82a72, < c2a878095b5c6f04f90553a3c45872f990dab14e | ≥ 53b1119a6e5028b125f431a0116ba73510d82a72, < f59c74df82f6ac9d2ea4e01aa3ae7c6c4481652d | ≥ 53b1119a6e5028b125f431a0116ba73510d82a72, < 00b4492686e0497fdb924a9d4c8f6f99377e176c | ≥ 5.15.12, < 5.15.75 | 5.16
  • linux_kernelEOL≥ 5.15.12, < 5.15.75 | ≥ 5.16.1, < 5.19.17 | ≥ 6.0, < 6.0.3 | 5.16 | 5.16:rc7 | 5.16:rc8
Debian1 product
  • linux< 6.0.3-1

3 vendors · 104 products

References

9 links