CVE-2021-3347

High

Description

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.

SeverityHigh

CVSS7.8

Exploit probability—

Product

Linux Kernel

PublishedJan 29, 2021

First seenJan 29, 2021

Weakness typeCWE-416Use after free

How to fix

Vendor advisories

debian.org/security/2021/dsa-4843
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/

Affected products

Product	Affected versions	Fixed in
linux linux_kernel	v ≤ 5.10.11	—
debian debian_linux	9.0, 10.0	—
fedoraproject fedora	32, 33	—

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