SB2012062215 - Permissions, Privileges, and Access Controls in Linux kernel
Published: June 22, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012062215
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-1021)
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.
Remediation
Install update from vendor's website.
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=526b4af47f44148c9d665e57723ed9f86634c6e3
- http://www.openwall.com/lists/oss-security/2011/02/25/5
- https://bugzilla.redhat.com/show_bug.cgi?id=680841
- https://github.com/torvalds/linux/commit/526b4af47f44148c9d665e57723ed9f86634c6e3