7.8

CVE-2025-40283: linux

CVSS: 7.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40283DEBIAN-CVE-2025-40283
Published 06-12-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40283 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
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 43 · Related 39
DLA-4404-1DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1

Timeline

  1. 06-12-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF There is a KASAN: slab-use-after-free read in btusb_disconnect(). Calling "usb_driver_release_interface(&btusb_driver, data->intf)" will free the btusb data associated with the interface. The same data is then used later in the function, hence the UAF. Fix by moving the accesses to btusb data to before the data is free'd.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.14%

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

Ubuntu152 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 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 | < 6.17.9-1
Linux1 product
  • linux≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 297dbf87989e09af98f81f2bcb938041785557e8 | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < f858f004bc343a7ae9f2533bbb2a3ab27428532f | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 7a6d1e740220ff9dfcb6a8c994d6ba49e76db198 | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 5dc00065a0496c36694afe11e52a5bc64524a9b8 | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 1c28c1e1522c773a94e26950ffb145e88cd9834b | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < a2610ecd9fd5708be8997ca8f033e4200c0bb6af | ≥ fd913ef7ce619467c6b0644af48ba1fec499c623, < 23d22f2f71768034d6ef86168213843fc49bf550 | 4.11

3 vendors · 154 products

References

38 links
Show all 38 references