CVE-2021-32606 — Use After Free in Kernel

CWE-416 — Use After Free5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 85.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelFedoraproject FedoraDebian Linux
Timeline
PublishedMay 11
Latest updateMay 24

Description

In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages2 packages

▶NVDlinux/linux_kernel5.11 — 5.12.9
▶debiandebian/linux

Also affects: Fedora 32, 33, 34

Patches

Patch: www.openwall.com ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-pp6w-hmm3-7p57: In the Linux kernel 5↗2022-05-24
▶
OSV
CVE-2021-32606: In the Linux kernel 5↗2021-05-11
▶

📋Vendor Advisories

2
Red Hat
kernel: isotp_setsockopt in net/can/isotp.c allows privilege escalation via use-after-free↗2021-05-12
▶
Debian
CVE-2021-32606: linux - In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c all...↗2021
▶
CVE-2021-32606 — Use After Free in Linux Kernel | cvebase