DEBIAN-CVE-2025-38004

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2025-38004
Published: 08 Jun 2025, 11:15
Last modified:15 Jun 2026, 19:05

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Jun 2025, 11:15
Published
Vulnerability first disclosed
15 Jun 2026, 19:05
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: can: bcm: add locking for bcm_op runtime updates The CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via hrtimer. The content and also the length of the sequence can be changed resp reduced at runtime where the 'currframe' counter is then set to zero. Although this appeared to be a safe operation the updates of 'currframe' can be triggered from user space and hrtimer context in bcm_can_tx(). Anderson Nascimento created a proof of concept that triggered a KASAN slab-out-of-bounds read access which can be prevented with a spin_lock_bh. At the rework of bcm_can_tx() the 'count' variable has been moved into the protected section as this variable can be modified from both contexts too.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • debian•linux

    < 5.10.244-1 | < 6.1.147-1 | < 6.12.32-1 | < 6.12.32-1

  • debian•linux-6.1

    < 6.1.153-1~deb11u1

References (1)