CVE-2010-2243 Null dereference in linux-2.6

What is CVE-2010-2243?

CVE-2010-2243 is a high-severity vulnerability in Linux kernel, published on 7 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability exists in kernel/time/clocksource.c in the Linux kernel before 2.6.34 where on non-GENERIC_TIME systems (GENERIC_TIME=n), accessing /sys/devices/system/clocksource/clocksource0/current_clocksource results in an OOPS.

Weakness: CWE-20

Which versions are affected by CVE-2010-2243?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2010-2243?

No fix has been published for CVE-2010-2243 yet. Limit exposure of the affected software until one is available.

Is CVE-2010-2243 being exploited?

There is no known exploitation of CVE-2010-2243 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-9gqx-256w-jx9x.