CVE-2017-15299

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-14 · updated 2026-06-17
Weakness: CWE-476

Description

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, 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 system call.

Affected products

Linux kernel: through 4.13.6

References

https://access.redhat.com/errata/RHSA-2018:0654
https://bugzilla.redhat.com/show_bug.cgi?id=1498016
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://marc.info/?t=150654188100001&r=1&w=2
https://marc.info/?t=150783958600011&r=1&w=2
https://usn.ubuntu.com/3798-1/
https://usn.ubuntu.com/3798-2/
https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html
https://access.redhat.com/errata/RHSA-2018:0654
https://bugzilla.redhat.com/show_bug.cgi?id=1498016
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://marc.info/?t=150654188100001&r=1&w=2

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