CVE-2011-1776
What it is
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.
At a glance
- Exploitability
- Can be exploited with physical access without logging in. High risk of data exposure, service disruption.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 6.1 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Weakness
- CWE-119 · Buffer errors
- Record status
- Modified
Affected
- Linux Kernel < 2.6.39
- Redhat Enterprise Linux Desktop 5.0
- Redhat Enterprise Linux Server 5.0
- Redhat Enterprise Linux Server Aus 5.6
- Redhat Enterprise Linux Server Eus 5.6
- Redhat Enterprise Linux Workstation 5.0
Attack profile CVSS 3.1 · 6.1
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2011-1776.md and follow it. Check whether this project is affected by CVE-2011-1776. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://openwall.com/lists/oss-security/2011/05/10/4
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- https://bugzilla.redhat.com/show_bug.cgi?id=703026
- http://openwall.com/lists/oss-security/2011/05/10/4
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- https://bugzilla.redhat.com/show_bug.cgi?id=703026
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
- http://openwall.com/lists/oss-security/2011/05/10/4
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://securityreason.com/securityalert/8369
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://www.pre-cert.de/advisories/PRE-SA-2011-04.txt
- http://www.securityfocus.com/bid/47796
- https://bugzilla.redhat.com/show_bug.cgi?id=703026
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
- http://openwall.com/lists/oss-security/2011/05/10/4
- http://rhn.redhat.com/errata/RHSA-2011-0927.html
- http://securityreason.com/securityalert/8369
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://www.pre-cert.de/advisories/PRE-SA-2011-04.txt
- http://www.securityfocus.com/bid/47796
- https://bugzilla.redhat.com/show_bug.cgi?id=703026