NuytsTech Security

CVE-2024-1086

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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.

More information : http://www.openwall.com/lists/oss-security/2024/04/10/22

Attack vector : LOCAL
Attack complexity : LOW
Privileges required : LOW
User interaction : NONE
Confidentiality impact : HIGH
Integrity impact : HIGH
Base score : 7.8
Base severity : HIGH
Exploitability score : 1.8
Impact score : 5.9

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