regulator: ltc3676: don't read the write-only HRST and CLIRQ registers
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).
CVE-2026-99022
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-99022
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "37b918a034feda1b1ef404acf003812f37ab8da2",
"lessThan": "fd376d83741118e0212f0da985889c1a98d9c827",
"versionType": "git"
},
{
"status": "affected",
"version": "37b918a034feda1b1ef404acf003812f37ab8da2",
"lessThan": "1fb0d58fd363b439b4faf08a16ee6ae38b575cd4",
"versionType": "git"
},
{
"status": "affected",
"version": "37b918a034feda1b1ef404acf003812f37ab8da2",
"lessThan": "199a62d70314d21f06a9a6faaa3ef54d0404910c",
"versionType": "git"
},
{
"status": "affected",
"version": "37b918a034feda1b1ef404acf003812f37ab8da2",
"lessThan": "ca5d85335a8fa6e87b45629f1a07b412482cab17",
"versionType": "git"
},
{
"status": "affected",
"version": "37b918a034feda1b1ef404acf003812f37ab8da2",
"lessThan": "28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83",
"versionType": "git"
}
],
"programFiles": [
"drivers/regulator/ltc3676.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/regulator/ltc3676.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-99022
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #52857 · Revision 1
- Added to Heist Feed
- Publisher date