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Linux Kernel Multiple Vulnerabilities

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Release Date:  2008-11-04    Last Update:  2008-11-28    Views:  8,899

Secunia Advisory SA32510

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service), and by malicious people to potentially cause a DoS.

1) A vulnerability is caused due to the "hfsplus_find_cat()" function in fs/hfsplus/catalog.c not properly checking the catalog name length. This can be exploited to crash a system by e.g. mounting a specially crafted hfsplus file system.

2) A vulnerability is caused due to the "hfsplus_block_allocate()" function in fs/hfsplus/bitmap.c not properly checking the return values of "read_mapping_page()" function before using them. This can be exploited to crash a system by e.g. mounting a specially crafted hfsplus file system.

3) An indirect recursion error within the "__scm_destroy()" function in net/core/scm.c can be exploited to crash the system via certain UNIX socket operations.

4) A boundary error within the "lbs_process_bss()" function in drivers/net/wireless/libertas/scan.c when processing certain beacon or probe responses can be exploited to cause a buffer overflow.

Successful exploitation requires that the Marvel 8xxx Libertas WLAN driver is used.


Solution:
Update to version 2.6.27.5. Vulnerabilities #3 and #4 are also fixed in version 2.6.25.20 and 2.6.26.8.

Provided and/or discovered by:
1, 2) Eric Sesterhenn
3, 4) Reported by the vendor.

Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.20
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.26.8
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.5

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Linux Kernel Multiple Vulnerabilities

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