NULL Pointer Dereference Affecting kernel-rt-trace package, versions <0:3.10.0-693.17.1.rt56.636.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Jul 2021
- disclosed2 Nov 2017
Introduced: 2 Nov 2017
CVE-2017-12193 (opens in a new tab)How to fix?
Upgrade RHEL:7 kernel-rt-trace to version 0:3.10.0-693.17.1.rt56.636.el7 or higher.
This issue was patched in RHSA-2018:0152.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace package and not the kernel-rt-trace package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/101678
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- https://bugzilla.redhat.com/show_bug.cgi?id=1501215
- https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- https://access.redhat.com/security/cve/CVE-2017-12193
- https://access.redhat.com/errata/RHSA-2018:0152
- https://usn.ubuntu.com/3698-1/
- https://usn.ubuntu.com/3698-2/