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CVE-2024-1086

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Date: January 31, 2024

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

Language: C

Severity Score

Related Resources (13)

https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660
http://www.openwall.com/lists/oss-security/2024/04/10/23
http://www.openwall.com/lists/oss-security/2024/04/17/5
https://nvd.nist.gov/vuln/detail/CVE-2024-1086
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660
https://github.com/Notselwyn/CVE-2024-1086
http://www.openwall.com/lists/oss-security/2024/04/10/22
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/
https://news.ycombinator.com/item?id=39828424
https://pwning.tech/nftables/
http://www.openwall.com/lists/oss-security/2024/04/14/1
http://www.openwall.com/lists/oss-security/2024/04/15/2
https://www.mend.io/vulnerability-database/CVE-2024-1086

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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