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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel | Aug 28, 2019 | Aug 30, 2018 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Aug 30, 2018 |
| Redhat_linux | — | Upgrade kernel | Oct 31, 2018 | Aug 30, 2018 |
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