CyberRota Analysis
AI-GeneratedA vulnerability exists in the handling of the iovec array during the decryption of TLS 1.2 CBC records, where uninitialized entries can lead to kernel panic due to improper memory access. This issue arises when a remote TLS peer manipulates TCP segmentation, allowing them to craft packets that exploit the flaw. Organizations utilizing affected kernel versions should prioritize patching this vulnerability to prevent potential denial-of-service attacks.
Original NVD Description
When building the iovec array for a received TLS 1.2 CBC record, ktls_ocf_tls_cbc_decrypt() incremented the iovec index for every mbuf in the chain, including mbufs that were skipped because they contained only TLS header bytes. This left uninitialized entries in the iovec array. The iovec array was allocated without zeroing. A remote TLS peer can cause the kernel to read from uninitialized iovec entries during HMAC computation, resulting in a kernel panic. The peer must be able to control TCP segmentation such that the first mbuf of a CBC record contains only the 5-byte TLS record header.
Related CVEs
Other vulnerabilities affecting the same vendor(s)