Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
7e70cb4978507cf31d76b90e4cfb4c28cad87f0c to < 1e720f63dbafc093a8f5d519f05b67724993edd4affected7e70cb4978507cf31d76b90e4cfb4c28cad87f0c to < a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0affected7e70cb4978507cf31d76b90e4cfb4c28cad87f0c to < cca38f2102a4cd35eda8d48950df4817b4b24757affected7e70cb4978507cf31d76b90e4cfb4c28cad87f0c to < 8697c431e297eb0d0ab13dda6bc172b48a34f05caffected
Linux Linux
Default version status: affected
2.6.38affected0 to < 2.6.38unaffected6.12.112 to ≤ 6.12.*unaffected6.18.54 to ≤ 6.18.*unaffected7.2.8 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected