CVE-2024-35821
ubifs: Set page uptodate in the correct place
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Description
In the Linux kernel, the following vulnerability has been resolved: ubifs: Set page uptodate in the correct place Page cache reads are lockless, so setting the freshly allocated page uptodate before we've overwritten it with the data it's supposed to have in it will allow a simultaneous reader to see old data. Move the call to SetPageUptodate into ubifs_write_end(), which is after we copied the new data into the page.
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/142d87c958d9454c3cffa625fab56f3016e8f9f3
- https://git.kernel.org/stable/c/17772bbe9cfa972ea1ff827319f6e1340de76566
- https://git.kernel.org/stable/c/4aa554832b9dc9e66249df75b8f447d87853e12e
- https://git.kernel.org/stable/c/4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e
- https://git.kernel.org/stable/c/723012cab779eee8228376754e22c6594229bf8f
References (11)
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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