CVE-2006-5749 Null dereference in n/a

What is CVE-2006-5749?

CVE-2006-5749 is a low-severity vulnerability in Linux kernel, published on 4 Jan 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The isdn_ppp_ccp_reset_alloc_state function in drivers/isdn/isdn_ppp.c in the Linux 2.4 kernel before 2.4.34-rc4 does not call the init_timer function for the ISDN PPP CCP reset state timer, which has unknown attack vectors and results in a system crash.

Which versions are affected by CVE-2006-5749?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2006-5749?

No fix has been published for CVE-2006-5749 yet. Limit exposure of the affected software until one is available.

Is CVE-2006-5749 being exploited?

There is no known exploitation of CVE-2006-5749 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-56jh-q7g2-9cx8.