A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. This can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.
Version | Score | Severity | Vector String |
---|---|---|---|
3.0 | 6.2 | Medium | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Product | Vendor | Version |
---|---|---|
kernel | [UNKNOWN] | < 9.9.2.50 |