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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ade612967e2cdfb9290ebcb773f302c82f311fa, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 42bef500d07b5769d916e9122a3e3fa3fd2245ef, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc7f105451044501a50cfd530cfa3b472c54acbc, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e6c5169db423e51dcc66a73fd15409c0d38e088 … |
| Linux | Linux | — | 2.6.12, 0 < 2.6.12, 5.10.261 ≤ 5.10.*, 5.15.212 ≤ 5.15.* … |
References (8)
- https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa
- https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef
- https://git.kernel.org/stable/c/fc7f105451044501a50cfd530cfa3b472c54acbc
- https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088
- https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8
- https://git.kernel.org/stable/c/9f74d28e903fa4fdf82f870d0aeadddc8196e41c
- https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6
- https://git.kernel.org/stable/c/cbfe53599eebffd188938ab6774cc41794f6f9d5