CVE-2026-64413
netfilter: ebtables: zero chainstack array
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 25, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ade612967e2cdfb9290ebcb773f302c82f311fa 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 42bef500d07b5769d916e9122a3e3fa3fd2245ef 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc7f105451044501a50cfd530cfa3b472c54acbc 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e6c5169db423e51dcc66a73fd15409c0d38e088 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 29bf41a9b59aff9f6197df58641a00037d567ca8 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f74d28e903fa4fdf82f870d0aeadddc8196e41c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5ee856e4208acafaaaf7b84824d39b78c21345d6 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cbfe53599eebffd188938ab6774cc41794f6f9d5
Linux / Linux
2.6.12
References
git.kernel.org: https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa git.kernel.org: https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef git.kernel.org: https://git.kernel.org/stable/c/fc7f105451044501a50cfd530cfa3b472c54acbc git.kernel.org: https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088 git.kernel.org: https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8 git.kernel.org: https://git.kernel.org/stable/c/9f74d28e903fa4fdf82f870d0aeadddc8196e41c git.kernel.org: https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6 git.kernel.org: https://git.kernel.org/stable/c/cbfe53599eebffd188938ab6774cc41794f6f9d5