CVE-2022-49258
crypto: ccree - Fix use after free in cc_cipher_exit()
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Description
In the Linux kernel, the following vulnerability has been resolved: crypto: ccree - Fix use after free in cc_cipher_exit() kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But ctx_p->user.key is still used in the next line, which will lead to a use after free. We can call kfree_sensitive() after dev_dbg() to avoid the uaf.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/25c358efee5153dfd240d4e0d3169d5bebe9cacd
- https://git.kernel.org/stable/c/335bf1fc74f775a8255257aa3e33763f2257b676
- https://git.kernel.org/stable/c/3d950c34074ed74d2713c3856ba01264523289e6
- https://git.kernel.org/stable/c/c93017c8d5ebf55a4e453ac7c84cc84cf92ab570
- https://git.kernel.org/stable/c/cffb5382bd8d3cf21b874ab5b84bf7618932286b
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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