CVE-2023-53081
ocfs2: fix data corruption after failed write
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Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix data corruption after failed write When buffered write fails to copy data into underlying page cache page, ocfs2_write_end_nolock() just zeroes out and dirties the page. This can leave dirty page beyond EOF and if page writeback tries to write this page before write succeeds and expands i_size, page gets into inconsistent state where page dirty bit is clear but buffer dirty bits stay set resulting in page data never getting written and so data copied to the page is lost. Fix the problem by invalidating page beyond EOF after failed write.
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/1629f6f522b2d058019710466a84b240683bbee3
- https://git.kernel.org/stable/c/205759c6c18f54659b0b5976b14a52d1b3eb9f57
- https://git.kernel.org/stable/c/47eb055ad3588fc96d34e9e1dd87b210ce62906b
- https://git.kernel.org/stable/c/4c24eb49ab44351424ac8fe8567f91ea48a06089
- https://git.kernel.org/stable/c/90410bcf873cf05f54a32183afff0161f44f9715
References (8)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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