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 ocfs2-kmp-defaultUpgrade gfs2-kmp-defaultUpgrade kernel-obs-buildUpgrade kernel-ec2Upgrade dlm-kmp-defaultUpgrade kernel-docsUpgrade kernel-defaultUpgrade cluster-md-kmp-defaultUpgrade kernel-ec2-extraUpgrade kernel-ec2-devel | Feb 7, 2016 | Jan 19, 2016 |
| Ubuntu | — | Upgrade linux-image-3.16.0-60-powerpc64-embUpgrade linux-image-3.19.0-51-genericUpgrade linux-image-3.19.0-51-lowlatencyUpgrade linux-image-3.16.0-60-powerpc-smpUpgrade linux-image-3.2.0-99-genericUpgrade linux-image-3.16.0-60-generic-lpaeUpgrade linux-image-3.13.0-79-generic-lpaeUpgrade linux-image-3.16.0-60-powerpc64-smpUpgrade linux-image-4.2.0-27-genericUpgrade linux-image-3.13.0-79-powerpc-e500mcUpgrade linux-image-4.2.0-27-powerpc-e500mcUpgrade linux-image-4.2.0-27-powerpc64-embUpgrade linux-image-4.2.0-27-lowlatencyUpgrade linux-image-3.13.0-79-powerpc-smpUpgrade linux-image-3.19.0-51-generic-lpaeUpgrade linux-image-3.2.0-99-virtualUpgrade linux-image-3.13.0-79-lowlatencyUpgrade linux-image-4.2.0-27-generic-lpaeUpgrade linux-image-3.16.0-60-powerpc-e500mcUpgrade linux-image-3.2.0-99-powerpc64-smpUpgrade linux-image-3.2.0-99-omapUpgrade linux-image-3.19.0-51-powerpc-smpUpgrade linux-image-3.2.0-99-highbankUpgrade linux-image-3.2.0-99-powerpc-smpUpgrade linux-image-3.13.0-79-powerpc64-embUpgrade linux-image-3.16.0-60-genericUpgrade linux-image-3.13.0-79-powerpc-e500Upgrade linux-image-3.19.0-51-powerpc-e500mcUpgrade linux-image-4.2.0-27-powerpc64-smpUpgrade linux-image-3.2.0-99-generic-paeUpgrade linux-image-3.2.0-1477-omap4Upgrade linux-image-3.16.0-60-lowlatencyUpgrade linux-image-4.2.0-1022-raspi2Upgrade linux-image-3.13.0-79-genericUpgrade linux-image-3.19.0-51-powerpc64-embUpgrade linux-image-3.19.0-51-powerpc64-smpUpgrade linux-image-3.13.0-79-powerpc64-smpUpgrade linux-image-4.2.0-27-powerpc-smp | Feb 7, 2016 | Feb 7, 2016 |
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