Description
The is_gpt_valid function in fs/partitions/efi.c in the Linux kernel before 2.6.39 does not check the size of an Extensible Firmware Interface (EFI) GUID Partition Table (GPT) entry, which allows physically proximate attackers to cause a denial of service (heap-based buffer overflow and OOPS) or obtain sensitive information from kernel heap memory by connecting a crafted GPT storage device, a different vulnerability than CVE-2011-1577.
CVSS breakdown
CVSS 3.1
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Affected products
- Linux / Linux kernel2.6.39
- RedHat / enterprise_linux_desktop5.0 – 5.0
- RedHat / enterprise_linux_server5.0 – 5.0
- RedHat / enterprise_linux_server_aus5.6 – 5.6
- RedHat / enterprise_linux_server_eus5.6 – 5.6
- RedHat / enterprise_linux_workstation5.0 – 5.0
References
- MISChttp://rhn.redhat.com/errata/RHSA-2011-0927.html
- MAILING_LISThttp://openwall.com/lists/oss-security/2011/05/10/4
- MISChttp://securityreason.com/securityalert/8369
- MISChttp://www.securityfocus.com/bid/47796
- MISChttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- MISChttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
- VENDOR_ADVISORYhttp://www.pre-cert.de/advisories/PRE-SA-2011-04.txt
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=703026