Description
Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel through 3.11.1 allows local users to gain privileges by leveraging the CAP_NET_ADMIN capability and providing an invalid tuntap interface name in a TUNSETIFF 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 | 3.11.5-1 | — |
| Debian 13 | linux | 3.11.5-1 | — |
| Debian 12 | linux | 3.11.5-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +11 | 3.8.13-rt14.25.el6rt | RHSA-2013:1490 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-azure +2 | 4.4.180-4.31.1 | SUSE-SU-2019:1527-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-azure +2 | 4.4.180-4.31.1 | SUSE-SU-2019:1527-1 |
Advisories 2
- RHSA-2013:1490 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- SUSE-SU-2019:1527-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [netdev] 20130911 Use-after-free in TUNSETIFF mailing-list
- RHSA-2013:1490 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1007733
- USN-2020-1 vendor-advisory
- [linux-kernel] 20130911 [PATCH net V2] tuntap: correctly handle error in tun_set_iff() mailing-list
- [oss-security] 20130912 Fwd: Use-after-free in TUNSETIFF mailing-list
- USN-2049-1 vendor-advisory
- USN-2023-1 vendor-advisory
- openSUSE-SU-2019:1479 vendor-advisory
- openSUSE-SU-2019:1570 vendor-advisory
- openSUSE-SU-2019:1579 vendor-advisory