The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 7, 2016 | Jan 5, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 10, 2015 |
| Suse | — | Upgrade kernel-docsUpgrade cluster-md-kmp-defaultUpgrade kernel-ec2-develUpgrade kernel-ec2-extraUpgrade kernel-defaultUpgrade kernel-ec2Upgrade dlm-kmp-defaultUpgrade kernel-obs-buildUpgrade gfs2-kmp-defaultUpgrade ocfs2-kmp-default | Feb 7, 2016 | Jan 19, 2016 |
| Ubuntu | — | Upgrade linux-image-3.2.0-99-virtualUpgrade linux-image-3.16.0-60-powerpc64-embUpgrade linux-image-3.13.0-79-powerpc-e500mcUpgrade linux-image-3.2.0-99-powerpc64-smpUpgrade linux-image-3.13.0-79-powerpc64-embUpgrade linux-image-3.2.0-99-omapUpgrade linux-image-3.2.0-99-powerpc-smpUpgrade linux-image-3.2.0-99-highbankUpgrade linux-image-3.13.0-79-generic-lpaeUpgrade linux-image-3.19.0-51-powerpc-smpUpgrade linux-image-3.16.0-60-powerpc64-smpUpgrade linux-image-3.16.0-60-powerpc-e500mcUpgrade linux-image-4.2.0-27-lowlatencyUpgrade linux-image-3.19.0-51-genericUpgrade linux-image-3.19.0-51-lowlatencyUpgrade linux-image-3.13.0-79-lowlatencyUpgrade linux-image-4.2.0-27-powerpc64-embUpgrade linux-image-4.2.0-27-powerpc-e500mcUpgrade linux-image-4.2.0-27-genericUpgrade linux-image-4.2.0-27-generic-lpaeUpgrade linux-image-3.13.0-79-powerpc-smpUpgrade linux-image-3.16.0-60-generic-lpaeUpgrade linux-image-3.16.0-60-powerpc-smpUpgrade linux-image-3.2.0-99-genericUpgrade linux-image-3.19.0-51-generic-lpaeUpgrade linux-image-4.2.0-1022-raspi2Upgrade linux-image-3.16.0-60-genericUpgrade linux-image-3.16.0-60-lowlatencyUpgrade linux-image-3.13.0-79-powerpc64-smpUpgrade linux-image-3.19.0-51-powerpc64-embUpgrade linux-image-3.2.0-99-generic-paeUpgrade linux-image-3.19.0-51-powerpc64-smpUpgrade linux-image-3.2.0-1477-omap4Upgrade linux-image-4.2.0-27-powerpc64-smpUpgrade linux-image-3.13.0-79-powerpc-e500Upgrade linux-image-3.19.0-51-powerpc-e500mcUpgrade linux-image-4.2.0-27-powerpc-smpUpgrade linux-image-3.13.0-79-generic | Feb 7, 2016 | Feb 7, 2016 |
Prioritize with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub