NULL pointer dereference in Linux kernel - CVE-2012-1097
Published: May 17, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44069
CSH Severity: Medium
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-2012-1097
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. A remote attacker can trigger denial of service conditions via a (1) PTRACE_GETREGSET or (2) PTRACE_SETREGSET ptrace call.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
How to mitigate CVE-2012-1097
Update to version 3.2.10.
Linux kernel - update to 3.2.10
linux (Ubuntu package) - addressed in versions 2.6.32-41.88, 2.6.38-14.58, 3.0.0-19.33
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-32.68~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-15.59~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-19.33~lucid1
linux (Ubuntu package) - addressed in versions 2.6.32-41.88, 2.6.38-14.58, 3.0.0-19.33
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-32.68~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-15.59~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-19.33~lucid1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c8e252586f8d5de906385d8cf6385fee289a825e
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
- http://rhn.redhat.com/errata/RHSA-2012-0481.html
- http://rhn.redhat.com/errata/RHSA-2012-0531.html
- http://secunia.com/advisories/48842
- http://secunia.com/advisories/48898
- http://secunia.com/advisories/48964
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10
- http://www.openwall.com/lists/oss-security/2012/03/05/1
- https://bugzilla.redhat.com/show_bug.cgi?id=799209
- https://github.com/torvalds/linux/commit/c8e252586f8d5de906385d8cf6385fee289a825e