What’s Vulnerable › Vulnerabilities

CVE-2009-1961

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2009-06-08 · updated 2026-06-16
• Weakness: CWE-667

Description

The inode double locking code in fs/ocfs2/file.c in the Linux kernel 2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.29.4, and possibly other versions down to 2.6.19 allows local users to cause a denial of service (prevention of file creation and removal) via a series of splice system calls that trigger a deadlock between the generic_file_splice_write, splice_from_pipe, and ocfs2_file_splice_write functions.

Affected products

• Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04
• Debian Linux: 4.0
• Linux kernel: through 2.6.19; from 2.6.27 before 2.6.27.24; from 2.6.29 before 2.6.29.4; 2.6.30-rc1, 2.6.30-rc2 — fixed in 2.6.27.24, 2.6.29.4
• Opensuse: 10.3, 11.1
• SUSE Linux Enterprise: 11.0
• SUSE Linux Enterprise Server 15 SP1: 11
• SUSE Linux Enterprise Server: 11

How to fix

Upgrade to a fixed version: Linux kernel 2.6.27.24, 2.6.29.4. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=7bfac9ecf0585962fe13584f5cf526d8c8e76f17
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html
• http://secunia.com/advisories/35390
• http://secunia.com/advisories/35394
• http://secunia.com/advisories/35656
• http://secunia.com/advisories/35847
• http://secunia.com/advisories/36051
• http://securitytracker.com/id?1022307
• http://www.debian.org/security/2009/dsa-1844
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:135

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