Null pointer dereference in Linux kernel - CVE-2008-2812

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Main Vulnerability Database Vulnerabilities #VU95737

Null pointer dereference in Linux kernel - CVE-2008-2812

Published: July 9, 2008 / Updated: February 13, 2023


Vulnerability identifier: #VU95737
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2008-2812
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to execute arbitrary code.

The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving NULL pointer dereference of function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3) irda/irtty-sir.c, (4) ppp_async.c, (5) ppp_synctty.c, (6) slip.c, (7) wan/x25_asy.c, and (8) wireless/strip.c in drivers/net/.


Affected software

Linux kernel
Ubuntu
linux-source-2.6.15 (Ubuntu package)
linux-source-2.6.20 (Ubuntu package)
linux-source-2.6.22 (Ubuntu package)
linux (Ubuntu package)

How to mitigate CVE-2008-2812

Install update from vendor's repository.

linux-source-2.6.15 (Ubuntu package) - update to 2.6.15-52.71
linux-source-2.6.20 (Ubuntu package) - update to 2.6.20-17.39
linux-source-2.6.22 (Ubuntu package) - update to 2.6.22-15.58
linux (Ubuntu package) - update to 2.6.24-19.41

External References

Related Security Bulletins