CVE-2023-52654
io_uring/af_unix: disable sending io_uring over sockets
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Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/af_unix: disable sending io_uring over sockets File reference cycles have caused lots of problems for io_uring in the past, and it still doesn't work exactly right and races with unix_stream_read_generic(). The safest fix would be to completely disallow sending io_uring files via sockets via SCM_RIGHT, so there are no possible cycles invloving registered files and thus rendering SCM accounting on the io_uring side unnecessary.
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/18824f592aad4124d79751bbc1500ea86ac3ff29
- https://git.kernel.org/stable/c/3fe1ea5f921bf5b71cbfdc4469fb96c05936610e
- https://git.kernel.org/stable/c/5a33d385eb36991a91e3dddb189d8679e2aac2be
- https://git.kernel.org/stable/c/705318a99a138c29a512a72c3e0043b3cd7f55f4
- https://git.kernel.org/stable/c/bcedd497b3b4a0be56f3adf7c7542720eced0792
References (6)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Quick Info
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