CVE-2022-50301
iommu/omap: Fix buffer overflow in debugfs
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Description
In the Linux kernel, the following vulnerability has been resolved: iommu/omap: Fix buffer overflow in debugfs There are two issues here: 1) The "len" variable needs to be checked before the very first write. Otherwise if omap2_iommu_dump_ctx() with "bytes" less than 32 it is a buffer overflow. 2) The snprintf() function returns the number of bytes that *would* have been copied if there were enough space. But we want to know the number of bytes which were *actually* copied so use scnprintf() instead.
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/0c7043a5b5c3b35f5dc8875757f71e7f491d64d4
- https://git.kernel.org/stable/c/184233a5202786b20220acd2d04ddf909ef18f29
- https://git.kernel.org/stable/c/2fee0dbfaeaaa4bda04279ce772c4572b1429d04
- https://git.kernel.org/stable/c/4010a1afaae1c0fb9c2cac5de703bed29b1f1782
- https://git.kernel.org/stable/c/648472df221f2bbffb433b964bcb87baccc586d8
References (9)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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