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CVE-2023-1829

Good to know:

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Date: April 12, 2023

A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.

Language: C

Severity Score

Related Resources (9)

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-1829
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c710f75256bb3cf05ac7b1672c82b92c43f3d28
https://access.redhat.com/security/cve/CVE-2023-1829
https://nvd.nist.gov/vuln/detail/CVE-2023-1829
https://security.netapp.com/advisory/ntap-20230601-0001/
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
https://kernel.dance/#8c710f75256bb3cf05ac7b1672c82b92c43f3d28
https://www.mend.io/vulnerability-database/CVE-2023-1829

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

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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): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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