CVE-2026-99022: Linux kernel · regulator: ltc3676: don't read the write-only HRST and CLIRQ registers
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fd376d83741118e0212f0da985889c1a98d9c827 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in fd376d83741118e0212f0da985889c1a98d9c827, ca5d85335a8fa6e87b45629f1a07b412482cab17, 199a62d70314d21f06a9a6faaa3ef54d0404910c +2
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The vulnerability is fixed in specific Linux kernel commits identified by the provided fixedVersions hashes. Users should update to a Linux kernel version that includes these fixes. No additional mitigation is required once patched.
Description
A vulnerability in the Linux kernel regulator driver for the LTC3676 device allows reading from write-only registers HRST and CLIRQ. These registers are command strobes where writing HRST triggers a hard reset and writing CLIRQ clears interrupts. Reading these registers triggers the commands, causing unintended board resets during register dumps.
References
- git.kernel.org/stable/c/fd376d83741118e0212f0da985889c1a98d9c827 (opens in a new tab)
- git.kernel.org/stable/c/1fb0d58fd363b439b4faf08a16ee6ae38b575cd4 (opens in a new tab)
- git.kernel.org/stable/c/199a62d70314d21f06a9a6faaa3ef54d0404910c (opens in a new tab)
- git.kernel.org/stable/c/ca5d85335a8fa6e87b45629f1a07b412482cab17 (opens in a new tab)
- git.kernel.org/stable/c/28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 (opens in a new tab)