Description
The bcm_release function in net/can/bcm.c in the Linux kernel before 2.6.39-rc6 does not properly validate a socket data structure, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted release operation.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | linux-2.6 | 2.6.32-34squeeze1 | DSA-2240-1 |
| Debian 5.0 | linux-2.6 | 2.6.26-26lenny3 | DSA-2264-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +14 | 2.6.32-131.2.1.el6 | RHSA-2011:0836 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 2.6.33.9-rt31.75.el6rt | RHSA-2011:1253 |
Advisories 4
- RHSA-2011:1253 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:0836 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2240-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2264-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20110421 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- [oss-security] 20110421 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- [oss-security] 20110425 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c6914a6f261aca0c9f715f883a353ae7ff51fe83
- [oss-security] 20110421 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc6
- [netdev] 20110420 Add missing socket check in can/bcm release. mailing-list
- [oss-security] 20110422 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- [oss-security] 20110421 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- [oss-security] 20110420 Re: CVE request: kernel: missing socket check in can/bcm release mailing-list
- [oss-security] 20110420 CVE request: kernel: missing socket check in can/bcm release mailing-list
- 47503 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=698057