8.8

CVE-2023-53305: Bluetooth: L2CAP: Fix use-after-free

Modified
AliasesUBUNTU-CVE-2023-53305DEBIAN-CVE-2023-53305
Published 16-09-2025Last modified 05-08-2026

Vulnerability summary

CVE-2023-53305 is a high (CVSS 8.8) Use After Free vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.23%
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 27 · Related 15
RHSA-2025:17797RHSA-2025:17812RHSA-2025:18932RHSA-2025:19222RHSA-2025:21051RHSA-2025:21091

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free Fix potential use-after-free in l2cap_le_command_rej.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.22% 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: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu123 products
  • linuxAll versions (No fix recorded) | < 5.4.0-169.187 | < 5.15.0-91.101
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1116.126 | < 5.15.0-1051.56
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < e76bab1b7afa580cd76362540fc37551ada4359b | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < 1a40c56e8bff3e424724d78a9a6b3272dd8a371d | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < fe49aa73cca6608714477b74bfc6874b9db979df | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < 2958cf9f805b9f0bdc4a761bf6ea281eb8d44f8e | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < 548a6b64b3c0688f01119a6fcccceb41f8c984e4 | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < 149daab45922ab1ac7f0cbeacab7251a46bf5e63 | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < 255be68150291440657b2cdb09420b69441af3d8 | ≥ 71fb419724fadab4efdf98210aa3fe053bd81d29, < f752a0b334bb95fe9b42ecb511e0864e2768046f | 3.14
  • linux_kernel< 4.14.324 | ≥ 4.15, < 4.19.293 | ≥ 4.20, < 5.4.255 | ≥ 5.5, < 5.10.192 | ≥ 5.11, < 5.15.128 | ≥ 5.16, < 6.1.47 | ≥ 6.2, < 6.4.12
Debian1 product
  • linux< 6.1.52-1 | < 6.4.13-1

3 vendors · 126 products

References

12 links
Show all 12 references