Improper Input Validation Affecting kernel-debug-modules package, versions *

Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules package and not the kernel-debug-modules package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

crypto: ecdh - explicitly zeroize private_key

private_key is overwritten with the key parameter passed in by the caller (if present), or alternatively a newly generated private key. However, it is possible that the caller provides a key (or the newly generated key) which is shorter than the previous key. In that scenario, some key material from the previous key would not be overwritten. The easiest solution is to explicitly zeroize the entire private_key array first.

Note that this patch slightly changes the behavior of this function: previously, if the ecc_gen_privkey failed, the old private_key would remain. Now, the private_key is always zeroized. This behavior is consistent with the case where params.key is set and ecc_is_key_valid fails.

• https://access.redhat.com/security/cve/CVE-2024-42098
• https://git.kernel.org/stable/c/39173b04abda87872b43c331468a4a14f8f05ce8
• https://git.kernel.org/stable/c/73e5984e540a76a2ee1868b91590c922da8c24c9
• https://git.kernel.org/stable/c/80575b252ab0358b7e93895b2a510beb3cb3f975
• https://git.kernel.org/stable/c/d96187eb8e59b572a8e6a68b6a9837a867ea29df
• https://git.kernel.org/stable/c/fd7ef325911eba1b7191b83cb580463242f2090d