CVE-2026-99022regulator: ltc3676: don't read the write-only HRST and CLIRQ registers
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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).
Timeline
ID reserved
By Linux
- 28 days later
· 28 days later
Published
- 7 days later
· 7 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < 4cc1e849bb7dd8deb37f6a51e1aaf725e2016595
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < 0893de2397d85547d4b88379044aa541b07b56af
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < f8b0ccdcf3ca7cf6e4c2c400e80f81a727f768c7
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < fd376d83741118e0212f0da985889c1a98d9c827
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < 1fb0d58fd363b439b4faf08a16ee6ae38b575cd4
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < 199a62d70314d21f06a9a6faaa3ef54d0404910c
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < ca5d85335a8fa6e87b45629f1a07b412482cab17
- affected 37b918a034feda1b1ef404acf003812f37ab8da2 – < 28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83
- affected 4.9
- unaffected < 4.9
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.11 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/4cc1e849bb7dd8deb37f6a51e1aaf725e2016595 (opens in a new tab)
- https://git.kernel.org/stable/c/0893de2397d85547d4b88379044aa541b07b56af (opens in a new tab)
- https://git.kernel.org/stable/c/f8b0ccdcf3ca7cf6e4c2c400e80f81a727f768c7 (opens in a new tab)
- https://git.kernel.org/stable/c/fd376d83741118e0212f0da985889c1a98d9c827 (opens in a new tab)
- https://git.kernel.org/stable/c/1fb0d58fd363b439b4faf08a16ee6ae38b575cd4 (opens in a new tab)
- https://git.kernel.org/stable/c/199a62d70314d21f06a9a6faaa3ef54d0404910c (opens in a new tab)
- https://git.kernel.org/stable/c/ca5d85335a8fa6e87b45629f1a07b412482cab17 (opens in a new tab)
- https://git.kernel.org/stable/c/28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-108816 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-99022)Record last updated .