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CVE-2023-1281

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Date: March 22, 2023

Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

Language: C

Severity Score

Related Resources (10)

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee059170b1f7e94e55fa6cadee544e176a6e59c2
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-1281
https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2
http://www.openwall.com/lists/oss-security/2023/04/11/3
https://nvd.nist.gov/vuln/detail/CVE-2023-1281
https://access.redhat.com/security/cve/CVE-2023-1281
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
https://security.netapp.com/advisory/ntap-20230427-0004/
https://www.mend.io/vulnerability-database/CVE-2023-1281

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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