Vulnerability Description
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.4.1 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd5045Issue TrackingPatchVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/04/3Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94217Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:2437
- https://access.redhat.com/errata/RHSA-2017:2444
- https://bugzilla.redhat.com/show_bug.cgi?id=1386286Issue Tracking
- https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026Issue TrackingPatchThird Party Advisory
- https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd5045Issue TrackingPatchVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2Release Notes
- http://www.openwall.com/lists/oss-security/2016/11/04/3Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94217Third Party AdvisoryVDB Entry
FAQ
What is CVE-2015-8970?
CVE-2015-8970 is a vulnerability with a CVSS score of 5.5 (MEDIUM). crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local us...
How severe is CVE-2015-8970?
CVE-2015-8970 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-8970?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.