NULL pointer dereference in Linux kernel - CVE-2011-3619
Published: June 8, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU42785
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-3619
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in security/apparmor/lsm.c in the Linux kernel before 3.0 does not properly handle invalid parameters, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by writing to a /proc/#####/attr/current file. A remote attacker can perform a denial of service (DoS) attack.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
How to mitigate CVE-2011-3619
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
linux (Ubuntu package) - addressed in versions 2.6.35-32.66, 2.6.38-11.48
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1
External References
- http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a5b2c5b2ad5853591a6cac6134cd0f599a720865
- http://www.openwall.com/lists/oss-security/2011/10/17/6
- https://github.com/torvalds/linux/commit/a5b2c5b2ad5853591a6cac6134cd0f599a720865