Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: regulator: ltc3676: don't read the write-only HRST and CLIRQ registers HRST (0x1e) and CLIRQ (0x1f) are write-only command strobes. Writing HRST triggers a hard reset of the chip and writing CLIRQ clears the interrupt; reading them returns nothing useful, and the read itself fires the command. The result is that a plain register dump resets the board: cat /sys/kernel/debug/regmap/2-003c/registers walks every readable register, hits HRST, and the board reboots. Split the callback back in two so HRST and CLIRQ stay writable but are no longer readable. The readable range is left unchanged (LTC3676_BUCK1 ... LTC3676_IRQSTAT).
References
- https://git.kernel.org/stable/c/0893de2397d85547d4b88379044aa541b07b56af
- https://git.kernel.org/stable/c/199a62d70314d21f06a9a6faaa3ef54d0404910c
- https://git.kernel.org/stable/c/1fb0d58fd363b439b4faf08a16ee6ae38b575cd4
- https://git.kernel.org/stable/c/28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83
- https://git.kernel.org/stable/c/4cc1e849bb7dd8deb37f6a51e1aaf725e2016595
- https://git.kernel.org/stable/c/ca5d85335a8fa6e87b45629f1a07b412482cab17
- https://git.kernel.org/stable/c/f8b0ccdcf3ca7cf6e4c2c400e80f81a727f768c7
- https://git.kernel.org/stable/c/fd376d83741118e0212f0da985889c1a98d9c827
FAQ
What is CVE-2026-99022?
CVE-2026-99022 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: regulator: ltc3676: don't read the write-only HRST and CLIRQ registers HRST (0x1e) and CLIRQ (0x1f) are write-only command strobes...
How severe is CVE-2026-99022?
CVSS scoring is not yet available for CVE-2026-99022. Check NVD for updates.
Is there a patch for CVE-2026-99022?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.