Description
The help function in net/netfilter/nf_nat_irc.c in the Linux kernel before 3.12.8 allows remote attackers to obtain sensitive information from kernel memory by establishing an IRC DCC session in which incorrect packet data is transmitted during use of the NAT mangle feature.
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 | 3.12.8-1 | — |
| Debian 13 | linux | 3.12.8-1 | — |
| Debian 12 | linux | 3.12.8-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 3.10.33-rt32.33.el6rt | RHSA-2014:0439 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-44.el6uek | 0.4.3-4.el6 | ELSA-2014-3070 |
| Oracle Linux 7 | dtrace-modules-3.8.13-44.el7uek | 0.4.3-4.el7 | ELSA-2014-3070 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-44.el7uek | ELSA-2014-3070 |
Advisories 2
- RHSA-2014:0439 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jan 7, 2026
- ELSA-2014-3070 Important: Unbreakable Enterprise kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 22, 2014
References
- USN-2137-1 vendor-advisory
- USN-2140-1 vendor-advisory
- USN-2158-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
- https://bugzilla.redhat.com/show_bug.cgi?id=1058748
- [oss-security] 20140128 Re: CVE request Linux kernel: netfilter: nf_nat: leakage of uninitialized buffer in IRC NAT helper mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2690d97ade05c5325cbf7c72b94b90d265659886
- https://github.com/torvalds/linux/commit/2690d97ade05c5325cbf7c72b94b90d265659886