CVE-2025-38665
- Source
- https://cve.org/CVERecord?id=CVE-2025-38665
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38665.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-38665
- Downstream
- Related
- Published
- 2025-08-22T16:02:57Z
- Modified
- 2026-08-12T03:30:13Z
- Summary
- can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode
Andrei Lalaev reported a NULL pointer deref when a CAN device is restarted from Bus Off and the driver does not implement the struct can_priv::do_set_mode callback.
There are 2 code path that call struct can_priv::do_set_mode:
- directly by a manual restart from the user space, via can_changelink()
- delayed automatic restart after bus off (deactivated by default)
To prevent the NULL pointer deference, refuse a manual restart or configure the automatic restart delay in can_changelink() and report the error via extack to user space.
As an additional safety measure let can_restart() return an error if can_priv::do_set_mode is not set instead of dereferencing it unchecked.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38665.json" }- References
-
- https://git.kernel.org/stable/c/0ca816a96fdcf32644c80cbe7a82c7b6ce6ddda5
- https://git.kernel.org/stable/c/6acceb46180f9e160d4f0c56fcaf39ba562822ae
- https://git.kernel.org/stable/c/6bbcf37c5114926c99a1d1e6993a5b35689d2599
- https://git.kernel.org/stable/c/c1f3f9797c1f44a762e6f5f72520b2e520537b52
- https://git.kernel.org/stable/c/cf81a60a973358dea163f6b14062f17831ceb894
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38665.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-38665
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced39549eef3587f1c1e8c65c88a2400d10fd30ea17Fixed6bbcf37c5114926c99a1d1e6993a5b35689d2599Fixedcf81a60a973358dea163f6b14062f17831ceb894Fixed0ca816a96fdcf32644c80cbe7a82c7b6ce6ddda5Fixed6acceb46180f9e160d4f0c56fcaf39ba562822aeFixedc1f3f9797c1f44a762e6f5f72520b2e520537b52