4.7

CVE-2022-49577: udp: Fix a data-race around sysctl_udp_l3mdev_accept.

Modified
AliasesUBUNTU-CVE-2022-49577DEBIAN-CVE-2022-49577
Published 26-02-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49577 is a medium (CVSS 4.7) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 8.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.18%
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 2
RHSA-2023:2458RHSA-2023:2951

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: udp: Fix a data-race around sysctl_udp_l3mdev_accept. While reading sysctl_udp_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.18% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu110 products
  • linuxAll versions (No fix recorded) | < 5.4.0-128.144 | < 5.15.0-50.56
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1086.93 | < 5.15.0-1021.25
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 63a6fff353d01da5a22b72670c434bf12fa0e3b8, < f39b03bd727a8fea62e82f10fe2e0d753b9930ff | ≥ 63a6fff353d01da5a22b72670c434bf12fa0e3b8, < fcaef69c79ec222e55643e666b80b221e70fa6a8 | ≥ 63a6fff353d01da5a22b72670c434bf12fa0e3b8, < 3f2ac2d6511bb0652abf4d7388d65bb9ff1c641c | ≥ 63a6fff353d01da5a22b72670c434bf12fa0e3b8, < cb0d28934ca10f99c47e2c6f451405d6c954fe48 | ≥ 63a6fff353d01da5a22b72670c434bf12fa0e3b8, < 3d72bb4188c708bb16758c60822fc4dda7a95174 | 4.11
  • linux_kernel≥ 4.11, < 5.4.208 | ≥ 5.5, < 5.10.134 | ≥ 5.11, < 5.15.58 | ≥ 5.16, < 5.18.15 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3 | 5.19:rc4 | 5.19:rc5 | 5.19:rc6 | 5.19:rc7
Debian1 product
  • linux< 5.18.16-1

3 vendors · 113 products

References

9 links