7.8

CVE-2023-53386: Bluetooth: Fix potential use-after-free when clear keys

Modified
AliasesUBUNTU-CVE-2023-53386DEBIAN-CVE-2023-53386
Published 18-09-2025Last modified 05-08-2026

Vulnerability summary

CVE-2023-53386 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
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 23 · Related 14
RHSA-2025:19102RHSA-2025:19103RHSA-2025:21051RHSA-2025:21084RHSA-2025:21091RHSA-2025:21128

Timeline

  1. 18-09-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix potential use-after-free when clear keys Similar to commit c5d2b6fa26b5 ("Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk"). We can not access k after kfree_rcu() call.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% 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.

Ubuntu111 products
  • linux< 5.15.0-94.104
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1053.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < e87da6a0ac6e631454e7da53a76aa9fe44aaa5dd | ≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < 942d8cefb022f384d5424f8b90c7878f3f93726f | ≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < 94617b736c25091b60e514e2e7aeafcbbee6b700 | ≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < da19f35868dfbecfff4f81166c054d2656cb1be4 | ≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < 35cc42f04bc49f0656f6840cb7451b3df6049649 | ≥ d7d41682efc25d58b5bd8b80e85e3c9ce586635c, < 3673952cf0c6cf81b06c66a0b788abeeb02ff3ae | 5.7
  • linux_kernel≥ 5.7, < 5.10.195 | ≥ 5.11, < 5.15.132 | ≥ 5.16, < 6.1.53 | ≥ 6.2, < 6.4.16 | ≥ 6.5, < 6.5.3
Debian1 product
  • linux< 6.1.55-1 | < 6.5.3-1

3 vendors · 114 products

References

10 links