CVE-2026-64413
HIGH
7,0
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Attack Vector: local
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8
https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa
https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef
https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6
https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088
https://git.kernel.org/stable/c/9f74d28e903fa4fdf82f870d0aeadddc8196e41c
https://git.kernel.org/stable/c/cbfe53599eebffd188938ab6774cc41794f6f9d5
https://git.kernel.org/stable/c/fc7f105451044501a50cfd530cfa3b472c54acbc