CVE-2026-92477
UnknownSummary
In the Linux kernel, ufs_saved_err_write() copies user input into a zero-initialized stack buffer and passes it to kstrtoint(). A write that fills the entire buffer overwrites its only terminator.
Risk Assessment
May lead to an out-of-bounds stack read, kernel crash, or potential code execution via debugfs in the UFS driver.
Recommendation
Update the Linux kernel to a version containing the fix that rejects input whose length leaves no room for the trailing NUL.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufs_saved_err_write() copies user input into a zero-initialized stack buffer and passes it to kstrtoint(). A write that fills the entire buffer overwrites its only terminator. Reject an input whose length leaves no room for the trailing NUL.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS