Answer in brief
CVE-2026-99022 records a Unknown severity vulnerability in regulator: ltc3676: don't read the write-only HRST and CLIRQ registers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=37b918a034feda1b1ef404acf003812f37ab8da2 <fd376d83741118e0212f0da985889c1a98d9c827 || >=37b918a034feda1b1ef404acf003812f37ab8da2 <1fb0d58fd363b439b4faf08a16ee6ae38b575cd4 || >=37b918a034feda1b1ef404acf003812f37ab8da2 <199a62d70314d21f06a9a6faaa3ef54d0404910c || >=37b918a034feda1b1ef404acf003812f37ab8da2 <ca5d85335a8fa6e87b45629f1a07b412482cab17 || >=37b918a034feda1b1ef404acf003812f37ab8da2 <28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 | fd376d83741118e0212f0da985889c1a98d9c827, 1fb0d58fd363b439b4faf08a16ee6ae38b575cd4, 199a62d70314d21f06a9a6faaa3ef54d0404910c, ca5d85335a8fa6e87b45629f1a07b412482cab17, 28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 |
| Linux/Linuxgeneric | 4.9 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
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).
Quoted source text, attributed separately from HOL analysis.