NULL pointer dereference in Linux kernel - CVE-2009-3043
Published: September 2, 2009 / Updated: June 4, 2024
Vulnerability identifier: #VU91016
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2009-3043
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the tty_ldisc_restore() and tty_ldisc_hangup() functions in drivers/char/tty_ldisc.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2009-3043
Install update from vendor's website.
Links to Public Exploits and PoC-codes
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5c58ceff103d8a654f24769bb1baaf84a841b0cc
- http://lkml.org/lkml/2009/8/20/21
- http://lkml.org/lkml/2009/8/20/27
- http://lkml.org/lkml/2009/8/20/68
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8
- http://www.openwall.com/lists/oss-security/2009/08/31/1
- http://www.openwall.com/lists/oss-security/2009/09/03/6
- http://www.openwall.com/lists/oss-security/2009/09/03/7
- http://www.securityfocus.com/bid/36191