Infinite loop in Linux kernel - CVE-2011-2213
Published: August 29, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44765
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-2213
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2011-2213
Install update from vendor's website.
Sources
- 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