linux: In the Linux kernel, the following vulnerability has been resolved: net: ena: PHC: Check return code before setting...
CVE-2026-63837 is fixed in linux on 1 platform by DEBIAN-CVE-2026-63837 (version 7.0.10-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 14 | 7.0.10-1 | DEBIAN-CVE-2026-63837 | Jul 20, 2026 |
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