Description
The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.
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 | 3.14.4-1 | — |
| Debian 13 | linux | 3.14.4-1 | — |
| Debian 12 | linux | 3.14.4-1 | — |
| Debian 7 | linux | 3.2.57-3+deb7u2 | DSA-2949-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze8 | DLA-0015-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-32.57 | USN-2290-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | perf +17 | 3.10.0-123.4.2.el7 | RHSA-2014:0786 |
| RHEL 6 | perf +16 | 2.6.32-431.23.3.el6 | RHSA-2014:0981 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 3.10.33-rt32.43.el6rt | RHSA-2014:0913 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-35.3.3.el6uek | 0.4.3-4.el6 | ELSA-2014-3052 |
| Oracle Linux 7 | dtrace-modules-3.8.13-35.3.3.el7uek | 0.4.3-4.el7 | ELSA-2014-3052 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-35.3.3.el7uek | ELSA-2014-3052 |
| Oracle Linux 7 | perf +11 | 3.10.0-123.4.2.el7 | ELSA-2014-0786 |
Advisories 8
- RHSA-2014:0786 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0981 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2290-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-2949-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-0015-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2014:0913 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ELSA-2014-3052 Important: unbreakable enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 29, 2014
- ELSA-2014-0786 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 23, 2014
References
- [oss-security] 20140509 Re: CVE request Linux kernel: filter: prevent nla extensions to peek beyond the end of the message mailing-list
- USN-2263-1 vendor-advisory
- DSA-2949 vendor-advisory
- https://source.android.com/security/bulletin/2017-04-01
- USN-2261-1 vendor-advisory
- USN-2252-1 vendor-advisory
- http://linux.oracle.com/errata/ELSA-2014-3052.html
- 58990 third-party-advisory
- 60613 third-party-advisory
- USN-2264-1 vendor-advisory
- https://github.com/torvalds/linux/commit/05ab8f2647e4221cbdb3856dd7d32bd5407316b3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=05ab8f2647e4221cbdb3856dd7d32bd5407316b3
- USN-2262-1 vendor-advisory
- 67321 vdb-entry
- USN-2259-1 vendor-advisory
- USN-2251-1 vendor-advisory
- 59311 third-party-advisory
- 59597 third-party-advisory
- 1038201 vdb-entry