8.8

CVE-2025-40318: linux

CVSS: 8.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40318DEBIAN-CVE-2025-40318
Published 08-12-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40318 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.1% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.27%
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 35 · Related 28
DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1RHSA-2026:1194RHSA-2026:1690

Timeline

  1. 08-12-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once hci_cmd_sync_dequeue_once() does lookup and then cancel the entry under two separate lock sections. Meanwhile, hci_cmd_sync_work() can also delete the same entry, leading to double list_del() and "UAF". Fix this by holding cmd_sync_work_lock across both lookup and cancel, so that the entry cannot be removed concurrently.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

0.00 pp

From 0.27% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.27%

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

Ubuntu127 products
  • linux< 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.159-1 | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ f00f36db76eb8fd10d13e80e2590f23b5beaa54d, < 0a94f7e017438935c09ef833a1aa908ad9875213 | ≥ 1499f79995c7ee58e3bfeeff75f6d1b37dcda881, < 932c0a4f77ac13e526fdd5b42914d29c9821d389 | ≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < ae76cf6c2c842944c6514c57df54d728f1916553 | ≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < 9cd536970192b72257afcdfba0bfc09993e6f19c | ≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < 09b0cd1297b4dbfe736aeaa0ceeab2265f47f772 | 357603f4d396d85fbf0045512efaf1d7f7394ed7 | ≥ 6.1.120, < 6.1.159 | ≥ 6.6.51, < 6.6.117 | ≥ 6.8.9, < 6.9 | 6.9

3 vendors · 129 products

References

24 links
Show all 24 references