CVE-2026-89936iio: dac: m62332: Fix regulator reference count imbalance
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% 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: iio: dac: m62332: Fix regulator reference count imbalance m62332_set_value() enables the Vcc regulator on every write of a non-zero value and disables it on every write of zero, without tracking the channel's current state. Because the regulator is reference counted, changing a channel directly from one non-zero value to another enables it more than once, while a later write of zero disables it only once. The reference count never returns to zero and the regulator is left enabled indefinitely. Only enable the regulator on the transition from zero to non-zero, and only disable it on the transition from non-zero to zero, using the previously stored channel value to detect the edge. Balance the regulator on the I2C error path so the reference count stays consistent if the write fails.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 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)
- 0.22% · top 88% 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 b87b0c0f81e8d11c881b726b886b7502ab67d884 – < bac0ed8bee651aa841375edf72c6ab1d10ac80c6
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < 9263b9ad968a563337a60e0eb66e35186e1faf9a
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < 1d3a7d7dd3adee19e00be2b2237140f0fe169484
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < f5acb824277a97a5210c454872202bf7f08c75d4
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < ae18d2d2ef27a4d04fda6e30c23774513dc9be1e
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < 08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < 9fe22f563b2a0fdb11fd3711a8c39c023629c08a
- affected b87b0c0f81e8d11c881b726b886b7502ab67d884 – < a130404ce0b69ca1438126bd81c1985d3b4d2e6f
- affected 4.2
- unaffected < 4.2
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/bac0ed8bee651aa841375edf72c6ab1d10ac80c6 (opens in a new tab)
- https://git.kernel.org/stable/c/9263b9ad968a563337a60e0eb66e35186e1faf9a (opens in a new tab)
- https://git.kernel.org/stable/c/1d3a7d7dd3adee19e00be2b2237140f0fe169484 (opens in a new tab)
- https://git.kernel.org/stable/c/f5acb824277a97a5210c454872202bf7f08c75d4 (opens in a new tab)
- https://git.kernel.org/stable/c/ae18d2d2ef27a4d04fda6e30c23774513dc9be1e (opens in a new tab)
- https://git.kernel.org/stable/c/08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9 (opens in a new tab)
- https://git.kernel.org/stable/c/9fe22f563b2a0fdb11fd3711a8c39c023629c08a (opens in a new tab)
- https://git.kernel.org/stable/c/a130404ce0b69ca1438126bd81c1985d3b4d2e6f (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-2026-80536 (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-2026-89936)Record last updated .