CVE-2023-52615
hwrng: core - Fix page fault dead lock on mmap-ed hwrng
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Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user.
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/26cc6d7006f922df6cc4389248032d955750b2a0
- https://git.kernel.org/stable/c/5030d4c798863ccb266563201b341a099e8cdd48
- https://git.kernel.org/stable/c/6822a14271786150e178869f1495cc03e74c5029
- https://git.kernel.org/stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922
- https://git.kernel.org/stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e
References (10)
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
- NONE
- Integrity
- NONE
- Availability
- HIGH
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