Description
Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by leveraging root privileges for a write operation.
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 | 3.11.8-1 | — |
| Debian 13 | linux | 3.11.8-1 | — |
| Debian 12 | linux | 3.11.8-1 | — |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze5 | DSA-2906-1 |
Advisories 1
- DSA-2906-1 linux-2.6 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.12.bz2
- 63510 vdb-entry
- [oss-security] 20131104 Re: some unstracked linux kernel security fixes mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=201f99f170df14ba52ea4c52847779042b7a623b
- https://github.com/torvalds/linux/commit/201f99f170df14ba52ea4c52847779042b7a623b