SB2011082901 - Infinite loop in Linux kernel
Published: August 29, 2011 Updated: August 11, 2020
Security Bulletin ID
SB2011082901
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Infinite loop (CVE-ID: CVE-2011-2213)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The inet_diag_bc_audit function in net/ipv4/inet_diag.c in the Linux kernel before 2.6.39.3 does not properly audit INET_DIAG bytecode, which allows local users to cause a denial of service (kernel infinite loop) via crafted INET_DIAG_REQ_BYTECODE instructions in a netlink message, as demonstrated by an INET_DIAG_BC_JMP instruction with a zero yes value, a different vulnerability than CVE-2010-3880.
Remediation
Install update from vendor's website.
References
- http://article.gmane.org/gmane.linux.network/197206
- http://article.gmane.org/gmane.linux.network/197208
- http://article.gmane.org/gmane.linux.network/197386
- http://article.gmane.org/gmane.linux.network/198809
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=eeb1497277d6b1a0a34ed36b97e18f2bd7d6de0d
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- http://patchwork.ozlabs.org/patch/100857/
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.3
- http://www.openwall.com/lists/oss-security/2011/06/20/1
- http://www.openwall.com/lists/oss-security/2011/06/20/13
- http://www.openwall.com/lists/oss-security/2011/06/20/16
- https://bugzilla.redhat.com/show_bug.cgi?id=714536