Linux Kernel up to 2.6.18 on 64-bit traps.c altivec_unavailable_exception data processing

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 2.6.18 on 64-bit. Affected by this vulnerability is the function altivec_unavailable_exception of the file arch/powerpc/kernel/traps.c. Such manipulation leads to data processing. This vulnerability is documented as CVE-2006-5331. The attack needs to be performed locally. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.18 on 64-bit (Operating System). It has been rated as critical. Affected by this issue is the function altivec_unavailable_exception of the file arch/powerpc/kernel/traps.c. The manipulation with an unknown input leads to a data processing vulnerability. Using CWE to declare the problem leads to CWE-19. Impacted is availability. CVE summarizes:

The altivec_unavailable_exception function in arch/powerpc/kernel/traps.c in the Linux kernel before 2.6.19 on 64-bit systems mishandles the case where CONFIG_ALTIVEC is defined and the CPU actually supports Altivec, but the Altivec support was not detected by the kernel, which allows local users to cause a denial of service (panic) by triggering execution of an Altivec instruction.

The bug was discovered 10/16/2006. The weakness was released 10/29/2017 as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2006-5331 since 10/17/2006. Local access is required to approach this attack. The successful exploitation needs a simple authentication. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 4031 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.6.19 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be patching the affected component.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4
• 2.6.5
• 2.6.6
• 2.6.7
• 2.6.8
• 2.6.9
• 2.6.10
• 2.6.11
• 2.6.12
• 2.6.13
• 2.6.14
• 2.6.15
• 2.6.16
• 2.6.17
• 2.6.18

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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• 🔍
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Exploitinginfo

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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