CVE-2022-50313
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
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Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix order >= MAX_ORDER warning due to crafted negative i_size As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly. Let's fall back to the generic path to deal with such unusual i_size. [1] https://lore.kernel.org/r/[email protected]
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/0ab621fcdff1a58ff4de51a8590fa92a0ecd34be
- https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f
- https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873
- https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cc
- https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997
References (6)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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