CVE-2017-12193

Description

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory github.com
Affected: n/a Linux kernel since 3.13 up to 4.14 (not including)
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11 issue tracking
https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b patch vendor advisory
http://www.securityfocus.com/bid/101678 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=1501215 issue tracking
https://access.redhat.com/errata/RHSA-2018:0151 vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b patch issue tracking
https://usn.ubuntu.com/3698-1/ vendor advisory
https://usn.ubuntu.com/3698-2/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-12193?
CVE-2017-12193 has been scored as a medium severity vulnerability.
How to fix CVE-2017-12193?
To fix CVE-2017-12193, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12193 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12193 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-12193?
CVE-2017-12193 affects n/a Linux kernel since 3.13 up to 4.14 (not including).
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