CVE-2022-41222: mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move

High severity · published Sep 21, 2022

CVE-2022-41222

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move

7.0

CVSS

0.5%

EPSS

On KEV

Description

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

High

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.5% · higher than 42% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kernel · Linux

5.0 before 5.4.211; 5.5 before 5.10.137; 5.11 before 5.12.18; 5.13 before 5.13.3 · source: NVD

Debian Linux · Debian

10.0 · source: NVD

Hci Baseboard Management Controller · Netapp

h300s; h410c; h410s; h500s; h700s · source: NVD

Ubuntu Linux · Canonical

18.04; 20.04; 22.04 · source: NVD

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens

before V1.1 · source: CISA

Affected product

Kernel

Linux

All Kernel CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2022-41222

CVE.org

https://www.cve.org/CVERecord?id=CVE-2022-41222

Third Party Advisory

http://packetstormsecurity.com/files/168466/Linux-Stable-5.4-5.10-Use-After-Free-Race-Condition.html

Patch

http://packetstormsecurity.com/files/171005/Kernel-Live-Patch-Security-Notice-LNS-0091-1.html

Exploit

https://bugs.chromium.org/p/project-zero/issues/detail?id=2347

Release Notes

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3

Patch

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2

Mailing List

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html