CVE-2008-7256 Null dereference in n/a

What is CVE-2008-7256?

CVE-2008-7256 is a low-severity vulnerability in Linux kernel, published on 3 Jun 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.

Which versions are affected by CVE-2008-7256?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2008-7256?

Apply the vendor's patch.

Is CVE-2008-7256 being exploited?

There is no known exploitation of CVE-2008-7256 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

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

Also known as GHSA-w478-8x45-v99x.