CVE-2024-1086: CWE-416 Use After Free in Linux Kernel
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.
AI Analysis
Technical Summary
CVE-2024-1086 is a use-after-free vulnerability in the nft_verdict_init() function within the nf_tables subsystem of the Linux kernel. This vulnerability affects Red Hat Enterprise Linux kernel packages and the kpatch-patch live patch module, which modifies running kernel code. Red Hat has issued security advisories RHSA-2024:3318 and RHSA-2024:3427 providing updated kernel and kpatch-patch packages to remediate this issue. The advisories specify that the update must be applied along with all previously released errata and that a system reboot is required to activate the fix.
Potential Impact
The vulnerability could allow improper memory handling in the kernel's nf_tables component, potentially leading to system instability or other security issues. Red Hat rates the security impact as Important (high severity). There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated kernel and kpatch-patch packages that fix this vulnerability. Users should apply these updates promptly, ensuring all prior relevant errata are installed. A system reboot is required for the update to take effect. Refer to Red Hat's official guidance at https://access.redhat.com/articles/11258 for detailed update instructions.
CVE-2024-1086: CWE-416 Use After Free in Linux Kernel
Description
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.
CVSS v3.1
Score 7.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-1086 is a use-after-free vulnerability in the nft_verdict_init() function within the nf_tables subsystem of the Linux kernel. This vulnerability affects Red Hat Enterprise Linux kernel packages and the kpatch-patch live patch module, which modifies running kernel code. Red Hat has issued security advisories RHSA-2024:3318 and RHSA-2024:3427 providing updated kernel and kpatch-patch packages to remediate this issue. The advisories specify that the update must be applied along with all previously released errata and that a system reboot is required to activate the fix.
Potential Impact
The vulnerability could allow improper memory handling in the kernel's nf_tables component, potentially leading to system instability or other security issues. Red Hat rates the security impact as Important (high severity). There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated kernel and kpatch-patch packages that fix this vulnerability. Users should apply these updates promptly, ensuring all prior relevant errata are installed. A system reboot is required for the update to take effect. Refer to Red Hat's official guidance at https://access.redhat.com/articles/11258 for detailed update instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:3318
- Cve Count
- 1
Threat ID: 6a3da1f64853345fc1834527
Added to database: 06/25/2026, 21:47:34 UTC
Last enriched: 08/07/2026, 17:46:20 UTC
Last updated: 09/10/2026, 19:24:53 UTC
Views: 13
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