5.5

CVE-2026-45836: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()

Modified
AliasesUBUNTU-CVE-2026-45836DEBIAN-CVE-2026-45836
Published 26-05-2026Last modified 15-10-2026

Vulnerability summary

CVE-2026-45836 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · -0.04 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 51 · Related 51
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1

Timeline

  1. 26-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.16% 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.

Ubuntu166 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < fd072f833147b0bc10c43a454624cb99d02f3fc7 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < 6e8d1a2a677a81caa60cf0aabd4217bd585fbba1 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < e1863e7480feddb90125d0dd5a1b572972d75908 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < cf1fd517f892ded88168df878f834b625133f86d | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < 58dc5e3d8768e121907608e6e196a908512fb083 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < 32bd343803d4ba47cc516f9d5f037f01b855d767 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < a93d66907dd4d29b65c9797a93784bf61906d6d6 | ≥ 8d836d71e2223b8961b21112bb4ce89ef8231682, < 78a88d43dab8d23aeef934ed8ce34d40e6b3d613 | 3.13
  • linux_kernel≥ 3.13, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.90 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 6.1.176-1 | < 6.12.90-1 | < 7.0.7-1

3 vendors · 169 products

References

52 links
Show all 52 references