PT-2026-51949 · Linux · Linux Kernel

Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-53055

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A use-after-free issue exists in the hisilicon/sec2 crypto component. Under heavy load during packet transmission, the hardware may complete packet processing and free the request memory (req) before the transmission function finishes. If the software attempts to access this req memory after it has been freed, a system error occurs. This is addressed by replacing the req with qp ctx memory, which persists throughout the entire packet sending process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-53055

Affected Products

Linux Kernel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-53055 · Security Note
• https://twitter.com/vuldb/status/2069861403910168958 · Twitter Post
• https://git.kernel.org/stable/c/67b53a660e6bf0da2fa8d8872e897a14d8059eaf · Note
• https://git.kernel.org/stable/c/b375c3c7209cc59e40e97998aa9bc768369cca0e · Note
• https://git.kernel.org/stable/c/ad73563f3a1edbfddf2724136c6a15826b354e18 · Note