Description
net/xfrm/xfrm_user.c in the Linux kernel before 3.6 does not verify that the actual Netlink message length is consistent with a certain header field, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability and providing a (1) new or (2) updated state.
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 | 3.2.32-1 | — |
| Debian 13 | linux | 3.2.32-1 | — |
| Debian 12 | linux | 3.2.32-1 | — |
References
- [oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs mailing-list
- https://github.com/torvalds/linux/commit/ecd7918745234e423dd87fcc0c077da557909720
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ecd7918745234e423dd87fcc0c077da557909720