CVE-2008-4934: Input Validation
First published: Wed Nov 05 2008(Updated: )
The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from the read_mapping_page function before calling kmap, which allows attackers to cause a denial of service (system crash) via a crafted hfsplus filesystem image.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <2.6.28 | |
| Debian Linux | =4.0 | |
| Ubuntu | =6.06 | |
| Ubuntu | =7.10 | |
| Ubuntu | =8.04 | |
| Ubuntu | =8.10 |
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Reference Links
- http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.28-rc1
- http://www.openwall.com/lists/oss-security/2008/11/03/2
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=commit;h=649f1ee6c705aab644035a7998d7b574193a598a
- http://secunia.com/advisories/32510
- http://secunia.com/advisories/32918
- http://www.ubuntu.com/usn/usn-679-1
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:234
- http://www.debian.org/security/2008/dsa-1687
- http://secunia.com/advisories/33180
- http://secunia.com/advisories/32998
- http://www.debian.org/security/2008/dsa-1681
- http://secunia.com/advisories/33556
- http://www.redhat.com/support/errata/RHSA-2009-0014.html
- http://secunia.com/advisories/33858
- http://rhn.redhat.com/errata/RHSA-2009-0264.html
- http://www.securityfocus.com/bid/32096
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46327
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11635
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git%3Ba=commit%3Bh=649f1ee6c705aab644035a7998d7b574193a598a
Frequently Asked Questions
What is the severity of CVE-2008-4934?
CVE-2008-4934 is considered to be of medium severity due to its potential to cause denial of service.
How do I fix CVE-2008-4934?
To fix CVE-2008-4934, upgrade the Linux kernel to version 2.6.28 or later.
What systems are affected by CVE-2008-4934?
CVE-2008-4934 affects various versions of the Linux kernel prior to 2.6.28 as well as specific versions of Debian and Ubuntu.
What type of attack does CVE-2008-4934 enable?
CVE-2008-4934 allows attackers to launch a denial of service attack, potentially crashing the system.
Is CVE-2008-4934 specific to any particular Linux distribution?
Yes, CVE-2008-4934 specifically affects certain versions of Debian and Ubuntu Linux.
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- version/debian linux/4.0
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- version/ubuntu/6.06
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- version/ubuntu/8.04
- version/ubuntu/8.10