CVE-2023-4015
Last modified
CVE-2023-4015 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.9, < 5.10.190 |
| Linux | Linux Kernel | >= 5.11, < 5.15.124 |
| Linux | Linux Kernel | >= 5.16, < 6.1.43 |
| Linux | Linux Kernel | >= 6.2, < 6.4.8 |
| Debian | Debian Linux | 12.0 |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2Issue Tracking, Mailing List, Patch, Vendor Advisory
- https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2Patch, Vendor Advisory
- https://www.debian.org/security/2023/dsa-5492Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2Issue Tracking, Mailing List, Patch, Vendor Advisory
- https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2Patch, Vendor Advisory
- https://www.debian.org/security/2023/dsa-5492Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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