| Name | CVE-2026-64413 |
| Description | In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chainstack array sashiko reports: looking at ebtables table translation, could a sparse cpu_possible_mask lead to an uninitialized pointer free? If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible, but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at CPU 2, the cleanup loop will blindly decrement and call vfree() on newinfo->chainstack[1]. Not a real-world bug, such allocation isn't expected to fail in the first place. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6405-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.259-1 | vulnerable | |
| bookworm | 6.1.176-1 | vulnerable | |
| bookworm (security) | 6.1.177-1 | vulnerable | |
| trixie | 6.12.94-1 | vulnerable | |
| trixie (security) | 6.12.100-1 | fixed | |
| forky | 7.1.3-1 | vulnerable | |
| sid | 7.1.5-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | trixie | 6.12.100-1 | DSA-6405-1 | ||
| linux | source | (unstable) | 7.1.4-1 |
https://git.kernel.org/linus/cbfe53599eebffd188938ab6774cc41794f6f9d5 (7.2-rc3)