Updated: 2026-02-27 02:04:55.1661
Description:
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous sets with timeouts while it is being released from the commit path. Mingi Cho originally reported this issue in a different path in 6.1.x with a pipapo set with low timeouts which is not possible upstream since 7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set element timeout"). Fix this by setting on the dead flag for anonymous sets to skip async gc in this case. According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on transaction abort"), Florian plans to accelerate abort path by releasing objects via workqueue, therefore, this sets on the dead flag for abort path too.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 5.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 5.5 | MEDIUM | Released | CLSA-2025:1743193221 | 2024-06-24 11:21:46 | |
| CentOS 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Not Vulnerable | 2024-06-11 11:20:43 | Not affected: CVE-2024-26643 only impacts kernels that include the nf_tables GC transaction API intr... | |
| CentOS 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Not Vulnerable | 2024-06-11 11:20:43 | Not affected: the vulnerable nf_tables anonymous-set timeout unbind path and its “dead” set hand... | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Ignored | 2024-06-24 11:21:46 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Ignored | 2024-06-24 11:21:46 | Ignored due to low severity | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Already Fixed | 2024-06-09 14:20:09 | ||
| CloudLinux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Not Vulnerable | 2024-06-11 11:20:43 | ||
| CloudLinux 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Ignored | 2025-03-17 23:16:10 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Not Vulnerable | 2024-06-11 11:20:43 | Not affected: CVE-2024-26643 only impacts kernels that include the nf_tables GC transaction API intr... | |
| Oracle Linux 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Ignored | 2025-03-17 23:16:10 | Ignored due to low severity |