5.5

CVE-2026-52928: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-52928DEBIAN-CVE-2026-52928
Published 24-06-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-52928 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.11%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 24
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1USN-8566-1

Timeline

  1. 24-06-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: af_unix: Reject SIOCATMARK on non-stream sockets SIOCATMARK reports whether the receive queue is at the urgent mark for MSG_OOB. In AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets. SOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(), so they should not support SIOCATMARK either. Return -EOPNOTSUPP for non-stream sockets before checking the receive queue.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

0.00 pp

From 0.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 314001f0bf927015e459c9d387d62a231fe93af3, < ec123873fdc83e7244c8ed6d17b8f8ea6c416a67 | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < f085971de6d6b8ef946a5e0bcd73ff24509a0f85 | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < b741c9c6ef59f17c1f104ddf1217ef77f79ed29b | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < 645b1ed3259af38b7814242a420bc2081bdd1eb6 | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < c34c41446acf6c0d13b5b06c809be11e0f7f2729 | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < 3147ddf5a41c20c45c2eb69e00b62f10f822056a | ≥ 314001f0bf927015e459c9d387d62a231fe93af3, < d119775f2bad827edc28071c061fdd4a91f889a5 | 5.15
  • linux_kernel≥ 5.15, < 5.15.211 | ≥ 5.16, < 6.1.177 | ≥ 6.2, < 6.6.144 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 6.1.177-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 159 products

References

32 links
Show all 32 references