CVE-2024-36974

HIGH

Linux Kernel 5.2-6.9.5 - Arbitrary Kernel Memory Write via TCA_TAPRIO_ATTR_PRIOMAP Validation Bypass

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: always validate TCA_TAPRIO_ATTR_PRIOMAP If one TCA_TAPRIO_ATTR_PRIOMAP attribute has been provided, taprio_parse_mqprio_opt() must validate it, or userspace can inject arbitrary data to the kernel, the second time taprio_change() is called. First call (with valid attributes) sets dev->num_tc to a non zero value. Second call (with arbitrary mqprio attributes) returns early from taprio_parse_mqprio_opt() and bad things can happen.

References (10)

Core 10
Core References

Scores

CVSS v3 7.8
EPSS 0.0028
EPSS Percentile 20.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (24)
linux/Kernel 5.11.0 - 5.15.162linux
linux/Kernel 5.16.0 - 6.1.95linux
linux/Kernel 5.2.0 - 5.4.279linux
linux/Kernel 5.5.0 - 5.10.221linux
linux/Kernel 6.2.0 - 6.6.35linux
linux/Kernel 6.7.0 - 6.9.6linux
Linux/Linux < 5.2
Linux/Linux 5.10.221 - 5.10.*
Linux/Linux 5.15.162 - 5.15.*
Linux/Linux 5.2
... and 14 more
Published Jun 18, 2024
Tracked Since Feb 18, 2026