CVE-2023-53285
ext4: add bounds checking in get_max_inline_xattr_value_size()
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Description
In the Linux kernel, the following vulnerability has been resolved: ext4: add bounds checking in get_max_inline_xattr_value_size() Normally the extended attributes in the inode body would have been checked when the inode is first opened, but if someone is writing to the block device while the file system is mounted, it's possible for the inode table to get corrupted. Add bounds checking to avoid reading beyond the end of allocated memory if this happens.
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/1d2caddbeeee56fbbc36b428c5b909c3ad88eb7f
- https://git.kernel.org/stable/c/2220eaf90992c11d888fe771055d4de330385f01
- https://git.kernel.org/stable/c/3d7b8fbcd2273e2b9f4c6de5ce2f4c0cd3cb1205
- https://git.kernel.org/stable/c/4597554b4f7b29e7fd78aa449bab648f8da4ee2c
- https://git.kernel.org/stable/c/486efbbc9445dca7890a1b86adbccb88b91284b0
References (9)
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
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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