CVE-2009-1961: Race Condition
First published: Mon Jun 08 2009(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | =2.6.27.12 | |
| Linux Kernel | =2.6.29-rc8-kk | |
| Linux Kernel | =2.6.27.3 | |
| Linux Kernel | =2.6.29.3 | |
| Linux Kernel | =2.6.27.1 | |
| Linux Kernel | =2.6.27.18 | |
| Linux Kernel | =2.6.27.21 | |
| Linux Kernel | =2.6.30-rc2 | |
| Linux Kernel | =2.6.27.10 | |
| Linux Kernel | =2.6.27.17 | |
| Linux Kernel | =2.6.27.16 | |
| Linux Kernel | =2.6.27.20 | |
| Linux Kernel | =2.6.27.4 | |
| Linux Kernel | =2.6.27.13 | |
| Linux Kernel | =2.6.27.15 | |
| Linux Kernel | =2.6.27.19 | |
| Linux Kernel | =2.6.27.22 | |
| Linux Kernel | =2.6.29-rc2_git7 | |
| Linux Kernel | =2.6.29.rc1 | |
| Linux Kernel | =2.6.27.2 | |
| Linux Kernel | =2.6.27.11 | |
| Linux Kernel | =2.6.29.rc2 | |
| Linux Kernel | =2.6.29.rc2-git1 | |
| Linux Kernel | =2.6.30-rc1 | |
| Linux Kernel | =2.6.29-git1 | |
| Linux Kernel | =2.6.27.23 | |
| Linux Kernel | =2.6.27.14 | |
| Linux Kernel | <=2.6.19 | |
| Linux Kernel | >=2.6.27<2.6.27.24 | |
| Linux Kernel | >=2.6.29<2.6.29.4 | |
| Debian | =4.0 | |
| Ubuntu | =6.06 | |
| Ubuntu | =8.04 | |
| Ubuntu | =8.10 | |
| Ubuntu | =9.04 | |
| openSUSE | =10.3 | |
| openSUSE | =11.1 | |
| SUSE Linux Enterprise Server | =11.0 | |
| SUSE Linux Enterprise Desktop with Beagle | =11 | |
| SUSE Linux Enterprise Server | =11 |
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Reference Links
- http://www.securityfocus.com/bid/35143
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=7bfac9ecf0585962fe13584f5cf526d8c8e76f17
- http://www.openwall.com/lists/oss-security/2009/06/03/1
- http://www.openwall.com/lists/oss-security/2009/06/02/2
- http://securitytracker.com/id?1022307
- http://www.openwall.com/lists/oss-security/2009/05/30/1
- http://www.openwall.com/lists/oss-security/2009/05/29/2
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
- http://secunia.com/advisories/35390
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
- http://secunia.com/advisories/35394
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:148
- http://www.redhat.com/support/errata/RHSA-2009-1157.html
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html
- http://www.debian.org/security/2009/dsa-1844
- http://secunia.com/advisories/36051
- http://secunia.com/advisories/35847
- http://secunia.com/advisories/35656
- http://www.ubuntu.com/usn/usn-793-1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=7bfac9ecf0585962fe13584f5cf526d8c8e76f17
Frequently Asked Questions
What is the severity of CVE-2009-1961?
CVE-2009-1961 has been classified as a moderate severity vulnerability due to its potential to cause denial of service.
How do I fix CVE-2009-1961?
To fix CVE-2009-1961, upgrade the Linux kernel to a version later than 2.6.30-rc3 or apply the provided patches.
Which Linux kernel versions are affected by CVE-2009-1961?
CVE-2009-1961 affects Linux kernel versions from 2.6.19 up to and including 2.6.30-rc2.
Can CVE-2009-1961 be exploited locally?
Yes, CVE-2009-1961 can be exploited by local users to cause a denial of service.
What types of systems are impacted by CVE-2009-1961?
CVE-2009-1961 impacts various Linux distributions including Debian, Ubuntu, and openSUSE that use the affected kernel versions.
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- agent/software-canonical-lookup
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- canonical/linux kernel
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- version/linux kernel/2.6.27.21
- version/linux kernel/2.6.30-rc2
- version/linux kernel/2.6.27.10
- version/linux kernel/2.6.27.17
- version/linux kernel/2.6.27.16
- version/linux kernel/2.6.27.20
- version/linux kernel/2.6.27.4
- version/linux kernel/2.6.27.13
- version/linux kernel/2.6.27.15
- version/linux kernel/2.6.27.19
- version/linux kernel/2.6.27.22
- version/linux kernel/2.6.29-rc2_git7
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- version/linux kernel/2.6.27.2
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