PT-2026-61154 · Linux · Linux
CVE-2026-63837
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Published
2026-07-19
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Updated
2026-07-19
None
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In the Linux kernel, the following vulnerability has been resolved:
net: ena: PHC: Check return code before setting timestamp output
ena phc gettimex64() is setting the output parameter regardless
of whether ena com phc get timestamp() succeeded or failed.
When ena com phc get timestamp() returns an error, the timestamp
parameter may contain uninitialized stack memory (e.g., when PHC is
disabled or in blocked state) or invalid hardware values. Passing
these to userspace via the PTP ioctl is both a security issue
(information leak) and a correctness bug.
Fix by checking the return code after releasing the lock and only
setting the output timestamp on success.
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Related Identifiers
Affected Products
Linux