CVE-2026-98222
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
KEYS: encrypted: fix integer overflow of datablob_len
encrypted_key_alloc() stores datablob_len in a u16. It is computed from
multiple string and payload lengths. If the result exceeds U16_MAX, the
assignment truncates the allocation size. KASAN reports a 32760-byte
slab-out-of-bounds write when __ekey_init() copies the master key
description into the undersized buffer.
The total payload length stored in key->datalen is also a u16. Use
check_add_overflow() to reject values that do not fit either destination,
and use kzalloc_flex() for the flexible-array allocation.
https://git.kernel.org/stable/c/1e720f63dbafc093a8f5d519f05b67724993edd4
https://git.kernel.org/stable/c/8697c431e297eb0d0ab13dda6bc172b48a34f05c
https://git.kernel.org/stable/c/a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0
https://git.kernel.org/stable/c/cca38f2102a4cd35eda8d48950df4817b4b24757