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CVE-2022-42703

Good to know:

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Date: October 8, 2022

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

Language: C

Severity Score

Related Resources (10)

https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b
https://nvd.nist.gov/vuln/detail/CVE-2022-42703
https://access.redhat.com/security/cve/CVE-2022-42703
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-42703
https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7
https://security-tracker.debian.org/tracker/CVE-2022-42703
https://bugs.chromium.org/p/project-zero/issues/detail?id=2351
https://www.mend.io/vulnerability-database/CVE-2022-42703

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

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Upgrade Version

Upgrade to version linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68;linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-libc-headers - 5.14

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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