Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!

Bug 490698 (CVE-2013-4270)

Summary: Kernel: net: permissions flaw in /proc/sys/net (CVE-2013-4270)
Product: Gentoo Security Reporter: Agostino Sarubbo <ago>
Component: KernelAssignee: Gentoo Kernel Security <security-kernel>
Status: RESOLVED FIXED    
Severity: normal CC: kernel
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://bugzilla.redhat.com/show_bug.cgi?id=1027752
Whiteboard:
Package list:
Runtime testing required: ---

Description Agostino Sarubbo gentoo-dev 2013-11-07 16:45:05 UTC
A flaw was found in the way net_ctl_permissions() function in the Linux kernel checked permissions.

As a result, an unprivileged local user could potentially use this flaw to access files in /proc/sys/net in a way that he would otherwise be unable to.

Acknowledgements:

This issue was discovered by Miroslav Vadkerti of Red Hat.

Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cff109768b2d9c03095848f4cd4b0754117262aa

Fixed by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2433c8f094a008895e66f25bd1773cdb01c91d01
Comment 1 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-03-25 15:43:25 UTC
Fix in 3.11.5 onwards