Description
The raw_cmd_copyin function in drivers/block/floppy.c in the Linux kernel through 3.14.3 does not properly handle error conditions during processing of an FDRAWCMD ioctl call, which allows local users to trigger kfree operations and gain privileges by leveraging write access to a /dev/fd device.
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+deb7u1 | DSA-2926-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze6 | DSA-2928-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-27.50 | USN-2226-1 |
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 | 2.6.32-431.20.3.el6 | RHSA-2014:0771 |
| RHEL 5 | kernel +12 | 2.6.18-371.9.1.el5 | RHSA-2014:0740 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | perf +9 | 2.6.32-220.52.1.el6 | RHSA-2014:0800 |
| Red Hat Rhel Mission Critical 5 | kernel +10 | 2.6.18-238.53.1.el5 | RHSA-2014:0801 |
| RHEL 6.4 EUS | perf +15 | 2.6.32-358.46.1.el6 | RHSA-2014:0900 |
| RHEL 5.9 EUS | kernel +12 | 2.6.18-348.27.1.el5 | RHSA-2014:0772 |
| Red Hat MRG 2 | kernel-rt +10 | 3.10.33-rt32.34.el6rt | RHSA-2014:0557 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +11 | 3.10.0-123.4.2.el7 | ELSA-2014-0786 |
Advisories 12
- RHSA-2014:0900 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0801 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0800 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0786 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0772 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0771 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0740 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0557 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-2226-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-2928-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2926-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ELSA-2014-0786 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 23, 2014
References
- 67300 vdb-entry
- SUSE-SU-2014:0683 vendor-advisory
- 59262 third-party-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ef87dbe7614341c2e7bfe8d32fcb7028cc97442c
- 59309 third-party-advisory
- 59406 third-party-advisory
- DSA-2928 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1094299
- http://linux.oracle.com/errata/ELSA-2014-0771.html
- RHSA-2014:0800 vendor-advisory
- [oss-security] 20140509 Linux kernel floppy ioctl kernel code execution mailing-list
- 59599 third-party-advisory
- DSA-2926 vendor-advisory
- SUSE-SU-2014:0667 vendor-advisory
- 1030474 vdb-entry
- http://linux.oracle.com/errata/ELSA-2014-3043.html
- https://github.com/torvalds/linux/commit/ef87dbe7614341c2e7bfe8d32fcb7028cc97442c
- RHSA-2014:0801 vendor-advisory