CVE-2007-3732 Null dereference in linux-2.6

What is CVE-2007-3732?

CVE-2007-3732 is a medium-severity vulnerability in Linux kernel, published on 7 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In Linux 2.6 before 2.6.23, the TRACE_IRQS_ON function in iret_exc calls a C function without ensuring that the segments are set properly. The kernel's %fs needs to be restored before the call in TRACE_IRQS_ON and before enabling interrupts, so that "current" references work. Without this, "current" used in the window between iret_exc and the middle of error_code where %fs is reset, would crash.

Which versions are affected by CVE-2007-3732?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2007-3732?

No fix has been published for CVE-2007-3732 yet. Limit exposure of the affected software until one is available.

Is CVE-2007-3732 being exploited?

There is no known exploitation of CVE-2007-3732 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-6732-cc4q-jp7r.