CVE-2008-4934 Null dereference in n/a

What is CVE-2008-4934?

CVE-2008-4934 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 5 Nov 2008. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-20

Which versions are affected by CVE-2008-4934?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.

How do I fix CVE-2008-4934?

Upgrade to a fixed version.

Is CVE-2008-4934 being exploited?

There is no known exploitation of CVE-2008-4934 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5hf7-wh5w-w87p.