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).
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
37b918a034feda1b1ef404acf003812f37ab8da2 to < 4cc1e849bb7dd8deb37f6a51e1aaf725e2016595affected37b918a034feda1b1ef404acf003812f37ab8da2 to < 0893de2397d85547d4b88379044aa541b07b56afaffected37b918a034feda1b1ef404acf003812f37ab8da2 to < f8b0ccdcf3ca7cf6e4c2c400e80f81a727f768c7affected37b918a034feda1b1ef404acf003812f37ab8da2 to < fd376d83741118e0212f0da985889c1a98d9c827affected37b918a034feda1b1ef404acf003812f37ab8da2 to < 1fb0d58fd363b439b4faf08a16ee6ae38b575cd4affected37b918a034feda1b1ef404acf003812f37ab8da2 to < 199a62d70314d21f06a9a6faaa3ef54d0404910caffected37b918a034feda1b1ef404acf003812f37ab8da2 to < ca5d85335a8fa6e87b45629f1a07b412482cab17affected37b918a034feda1b1ef404acf003812f37ab8da2 to < 28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83affected
Linux Linux
Default version status: affected
4.9affected0 to < 4.9unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.113 to ≤ 6.12.*unaffected6.18.57 to ≤ 6.18.*unaffected7.2.11 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/4cc1e849bb7dd8deb37f6a51e1aaf725e2016595 ↗
- https://git.kernel.org/stable/c/0893de2397d85547d4b88379044aa541b07b56af ↗
- https://git.kernel.org/stable/c/f8b0ccdcf3ca7cf6e4c2c400e80f81a727f768c7 ↗
- https://git.kernel.org/stable/c/fd376d83741118e0212f0da985889c1a98d9c827 ↗
- https://git.kernel.org/stable/c/1fb0d58fd363b439b4faf08a16ee6ae38b575cd4 ↗
- https://git.kernel.org/stable/c/199a62d70314d21f06a9a6faaa3ef54d0404910c ↗
- https://git.kernel.org/stable/c/ca5d85335a8fa6e87b45629f1a07b412482cab17 ↗
- https://git.kernel.org/stable/c/28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 ↗