5.5

CVE-2026-23367: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-23367DEBIAN-CVE-2026-23367
Published 25-03-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-23367 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2% 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
0.13%
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 32 · Related 30
MGASA-2026-0097MGASA-2026-0098SUSE-SU-2026:21834-1SUSE-SU-2026:2238-1SUSE-SU-2026:2450-1USN-8567-1

Timeline

  1. 25-03-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: radiotap: reject radiotap with unknown bits The radiotap parser is currently only used with the radiotap namespace (not with vendor namespaces), but if the undefined field 18 is used, the alignment/size is unknown as well. In this case, iterator->_next_ns_data isn't initialized (it's only set for skipping vendor namespaces), and syzbot points out that we later compare against this uninitialized value. Fix this by moving the rejection of unknown radiotap fields down to after the in-namespace lookup, so it will really use iterator->_next_ns_data only for vendor namespaces, even in case undefined fields are present.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < 6f80f6a60f5d87e5de5fb2732751fce799991c24 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < d1d1d3c50095928624a95b67a6d7ccc3a18f2215 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < 703fa979badbba83d31cd011606d060bfb8b0d1d | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < 129c8bb320a7cef692c78056ef8e89a2a12ba448 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < 2a60c588d5d39ad187628f58395c776a97fd4323 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < 2f8ceeba670610d66f77def32011f48de951d781 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < e664971759a0e5570b50c6592e58a7f97d55e992 | ≥ 33e5a2f776e331dc8a4379b6efb660d38f182d96, < c854758abe0b8d86f9c43dc060ff56a0ee5b31e0 | 2.6.34
  • linux_kernel≥ 2.6.34.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.77 | ≥ 6.13, < 6.18.17 | ≥ 6.19, < 6.19.7 | 2.6.34 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.8-1

3 vendors · 160 products

References

41 links
Show all 41 references