Linux kernel nfsaclsvc_release_getacl() function denial of service
| kernel-nfsaclsvc-dos (32578) |  Low Risk |
Description:
Linux kernel is vulnerable to a denial of service. The nfsaclsvc_release_getacl() function releases an improper pointer when handling NFSACL 2 "ACCESS" requests. An attacker could exploit this vulnerability to crash the system, resulting in a denial of service.
Platforms Affected:
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Linux, Kernel 2.6.13.1
- Linux, Kernel 2.6.13.2
- Linux, Kernel 2.6.13.3
- Linux, Kernel 2.6.13.4
- Linux, Kernel 2.6.13.5
- Linux, Kernel 2.6.14
- Linux, Kernel 2.6.14.1
- Linux, Kernel 2.6.14.2
- Linux, Kernel 2.6.14.3
- Linux, Kernel 2.6.14.4
- Linux, Kernel 2.6.14.5
- Linux, Kernel 2.6.14.6
- Linux, Kernel 2.6.14.7
- Linux, Kernel 2.6.15
- Linux, Kernel 2.6.15.1
- Linux, Kernel 2.6.15.2
- Linux, Kernel 2.6.15.3
- Linux, Kernel 2.6.15.4
- Linux, Kernel 2.6.15.5
- Linux, Kernel 2.6.15.6
- Linux, Kernel 2.6.15.7
- Linux, Kernel 2.6.16
- Linux, Kernel 2.6.16.1
- Linux, Kernel 2.6.16.10
- Linux, Kernel 2.6.16.11
- Linux, Kernel 2.6.16.12
- Linux, Kernel 2.6.16.13
- Linux, Kernel 2.6.16.14
- Linux, Kernel 2.6.16.15
- Linux, Kernel 2.6.16.16
- Linux, Kernel 2.6.16.17
- Linux, Kernel 2.6.16.18
- Linux, Kernel 2.6.16.19
- Linux, Kernel 2.6.16.2
- Linux, Kernel 2.6.16.20
- Linux, Kernel 2.6.16.21
- Linux, Kernel 2.6.16.22
- Linux, Kernel 2.6.16.23
- Linux, Kernel 2.6.16.24
- Linux, Kernel 2.6.16.25
- Linux, Kernel 2.6.16.26
- Linux, Kernel 2.6.16.27
- Linux, Kernel 2.6.16.28
- Linux, Kernel 2.6.16.29
- Linux, Kernel 2.6.16.3
- Linux, Kernel 2.6.16.30
- Linux, Kernel 2.6.16.31
- Linux, Kernel 2.6.16.32
- Linux, Kernel 2.6.16.33
- Linux, Kernel 2.6.16.34
- Linux, Kernel 2.6.16.35
- Linux, Kernel 2.6.16.36
- Linux, Kernel 2.6.16.37
- Linux, Kernel 2.6.16.38
- Linux, Kernel 2.6.16.39
- Linux, Kernel 2.6.16.4
- Linux, Kernel 2.6.16.40
- Linux, Kernel 2.6.16.41
- Linux, Kernel 2.6.16.43
- Linux, Kernel 2.6.16.44
- Linux, Kernel 2.6.16.45
- Linux, Kernel 2.6.16.46
- Linux, Kernel 2.6.16.47
- Linux, Kernel 2.6.16.48
- Linux, Kernel 2.6.16.49
- Linux, Kernel 2.6.16.5
- Linux, Kernel 2.6.16.50
- Linux, Kernel 2.6.16.51
- Linux, Kernel 2.6.16.52
- Linux, Kernel 2.6.16.53
- Linux, Kernel 2.6.16.6
- Linux, Kernel 2.6.16.7
- Linux, Kernel 2.6.16.8
- Linux, Kernel 2.6.16.9
- Linux, Kernel 2.6.17
- Linux, Kernel 2.6.17.1
- Linux, Kernel 2.6.17.10
- Linux, Kernel 2.6.17.11
- Linux, Kernel 2.6.17.12
- Linux, Kernel 2.6.17.13
- Linux, Kernel 2.6.17.14
- Linux, Kernel 2.6.17.2
- Linux, Kernel 2.6.17.3
- Linux, Kernel 2.6.17.4
- Linux, Kernel 2.6.17.5
- Linux, Kernel 2.6.17.6
- Linux, Kernel 2.6.17.7
- Linux, Kernel 2.6.17.8
- Linux, Kernel 2.6.17.9
- Linux, Kernel 2.6.18
- Linux, Kernel 2.6.18.1
- Linux, Kernel 2.6.18.2
- Linux, Kernel 2.6.18.3
- Linux, Kernel 2.6.18.4
- Linux, Kernel 2.6.18.5
- Linux, Kernel 2.6.18.6
- Linux, Kernel 2.6.19.1
- Linux, Kernel 2.6.19.2
- Linux, Kernel 2.6.19.3
- Linux, Kernel 2.6.20
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- Novell, OpenSUSE 10.2
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 10.1
- SuSE, SuSE SLE 10 DEBUGINFO
- SuSE, SuSE SLED 10
- SuSE, SuSE SLES 10
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of Linux kernel (2.6.18.7 or later), (2.6.19.4 or later), or (2.6.20.1 or later), available from The Linux Kernel Archives Web site. See References.
For Mandriva Linux (kernel):
Refer to MDKSA-2007:060 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux (kernel):
Refer to SUSE-SA:2007:018 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux (kernel):
Refer to SUSE-SA:2007:021 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux (linux-source):
Refer to USN-451-1 for patch, upgrade, or suggested workaround information. See References.
For Mandriva Linux (kernel):
Refer to MDKSA-2007:078 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Denial of Service
References:
- The Linux Kernel Archives Web site, ChangeLog-2.6.20.1 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.1.
- The Linux Kernel Archives Web site, ChangeLog-2.6.19.4 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19.4.
- The Linux Kernel Archives Web site, ChangeLog-2.6.18.7 at http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18.7.
- The The Linux Kernel Archives Web site, The Linux Kernel Archives at http://www.kernel.org/.
- BID-22625: Linux Kernel NFSACL Denial of Service Vulnerability
- CVE-2007-0772: The Linux kernel 2.6.13 and other versions before 2.6.20.1 allows remote attackers to cause a denial of service (oops) via a crafted NFSACL 2 ACCESS request that triggers a free of an incorrect pointer.
- MDKSA-2007:060: Updated kernel packages fix multiple vulnerabilities and bugs
- MDKSA-2007:078: Updated kernel packages fix multiple vulnerabilities and bugs
- SA24215: Linux Kernel NFSACL "ACCESS" Denial of Service
- SUSE-SA:2007:018: Linux kernel security update
- SUSE-SA:2007:021: Linux kernel security problems
- USN-451-1: Linux kernel vulnerabilities
- VUPEN/ADV-2007-0660: Linux Kernel NFSACL nfsaclsvc_release_getacl() Function Denial of Service Issue
Reported:
Feb 20, 2007
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