Description
Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename.
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 | 3.16.7-ckt4-1 | — |
| Debian 13 | linux | 3.16.7-ckt4-1 | — |
| Debian 12 | linux | 3.16.7-ckt4-1 | — |
| Debian 7 | linux | 3.2.65-1+deb7u2 | DSA-3170-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze12 | DLA-246-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-46.75 | USN-2516-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-31.41~14.04.1 | USN-2517-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +16 | 2.6.32-573.el6 | RHSA-2015:1272 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.37.1 | SUSE-SU-2015:1478-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-68.3.5.el6uek | 0.4.3-4.el6 | ELSA-2015-3053 |
| Oracle Linux 7 | dtrace-modules-3.8.13-68.3.5.el7uek | 0.4.3-4.el7 | ELSA-2015-3053 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-68.3.5.el7uek | ELSA-2015-3053 |
Advisories 7
- RHSA-2015:1272 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2516-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-246-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3170-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2517-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:1478-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-3053 Moderate: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 29, 2015
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=942080643bce061c3dd9d5718d3b745dcb39a8bc
- USN-2515-1 vendor-advisory
- DSA-3170 vendor-advisory
- USN-2542-1 vendor-advisory
- https://github.com/torvalds/linux/commit/942080643bce061c3dd9d5718d3b745dcb39a8bc
- USN-2541-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- USN-2518-1 vendor-advisory
- MDVSA-2015:058 vendor-advisory
- [oss-security] 20150217 Re: CVE request: Linux kernel ecryptfs 1-byte overwrite mailing-list
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2
- SUSE-SU-2015:1478 vendor-advisory
- 72643 vdb-entry
- USN-2517-1 vendor-advisory
- USN-2516-1 vendor-advisory
- 1031860 vdb-entry
- RHSA-2015:1272 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1193830