Description
Race condition in the find_keyring_by_name function in security/keys/keyring.c in the Linux kernel 2.6.34-rc5 and earlier allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via keyctl session commands that trigger access to a dead keyring that is undergoing deletion by the key_cleanup function.
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 5.0 | linux-2.6 | 2.6.26-22lenny1 | DSA-2053-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +11 | 2.6.18-194.8.1.el5 | RHSA-2010:0504 |
| RHEL 4 | kernel +10 | 2.6.9-89.0.26.EL | RHSA-2010:0474 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 1 | kernel-rt +10 | 2.6.24.7-161.el5rt | RHSA-2010:0631 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Linux Kernel 2.6.34 - 'find_keyring_by_name()' Local Memory Corruption EDB-33886 · dos · Apr 27, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- RHSA-2010:0631 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0504 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0474 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2053-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20100427 CVE request - kernel: find_keyring_by_name() can gain the freed keyring mailing-list
- SUSE-SA:2010:031 vendor-advisory
- [linux-kernel] 20100503 Re: [PATCH 2/7] KEYS: find_keyring_by_name() can gain access to a freed keyring mailing-list
- oval:org.mitre.oval:def:9715 vdb-entry signature
- https://patchwork.kernel.org/patch/94664/
- kernel-findkeyringbyname-dos(58254) vdb-entry
- [linux-kernel] 20100422 [PATCH 0/1][BUG][IMPORTANT] KEYRINGS: find_keyring_by_name() can gain the freed keyring mailing-list
- RHSA-2010:0474 vendor-advisory
- 40645 third-party-advisory
- 43315 third-party-advisory
- [linux-kernel] 20100430 [PATCH 2/7] KEYS: find_keyring_by_name() can gain access to a freed keyring mailing-list
- https://patchwork.kernel.org/patch/94038/
- [oss-security] 20100427 Re: CVE request - kernel: find_keyring_by_name() can gain the freed keyring mailing-list
- 40218 third-party-advisory
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html
- https://bugzilla.redhat.com/show_bug.cgi?id=585094
- DSA-2053 vendor-advisory
- 39719 vdb-entry
- 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX mailing-list
- 39830 third-party-advisory
- ADV-2010-1857 vdb-entry