Description
The bcm_char_ioctl function in drivers/staging/bcm/Bcmchar.c in the Linux kernel before 3.12 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via an IOCTL_BCM_GET_DEVICE_DRIVER_INFO ioctl call.
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 14 | linux | 3.12-1 | — |
| Debian 13 | linux | 3.12-1 | — |
| Debian 12 | linux | 3.12-1 | — |
References
- openSUSE-SU-2014:0247 vendor-advisory
- USN-2073-1 vendor-advisory
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.12.bz2
- USN-2076-1 vendor-advisory
- USN-2069-1 vendor-advisory
- USN-2070-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d1e72250c847fa96498ec029891de4dc638a5ba
- USN-2066-1 vendor-advisory
- USN-2071-1 vendor-advisory
- [oss-security] 20131104 Re: some unstracked linux kernel security fixes mailing-list
- USN-2074-1 vendor-advisory
- https://github.com/torvalds/linux/commit/8d1e72250c847fa96498ec029891de4dc638a5ba
- USN-2068-1 vendor-advisory
- openSUSE-SU-2014:0204 vendor-advisory
- USN-2072-1 vendor-advisory
- USN-2075-1 vendor-advisory
- USN-2067-1 vendor-advisory