Description
net/xfrm/xfrm_user.c in the Linux kernel before 3.6 does not initialize certain structures, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability.
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 | — |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze3 | DSA-2668-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.6.1.el6 | RHSA-2013:0744 |
| RHEL 5 | kernel +12 | 2.6.18-348.4.1.el5 | RHSA-2013:0747 |
Advisories 3
- RHSA-2013:0744 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2668-1 linux-2.6 - several Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2013:0747 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f778a636713a435d3a922c60b1622a91136560c1
- [oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefs mailing-list
- https://github.com/torvalds/linux/commit/7b789836f434c87168eab067cfbed1ec4783dffd
- USN-1792-1 vendor-advisory
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
- RHSA-2013:0744 vendor-advisory
- https://github.com/torvalds/linux/commit/1f86840f897717f86d523a13e99a447e6a5d2fa5
- USN-1798-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1f86840f897717f86d523a13e99a447e6a5d2fa5
- https://github.com/torvalds/linux/commit/f778a636713a435d3a922c60b1622a91136560c1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7b789836f434c87168eab067cfbed1ec4783dffd