CVE-2026-89936iio: dac: m62332: Fix regulator reference count imbalance
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b87b0c0f81e8d11c881b726b886b7502ab67d884 before bac0ed8bee651aa841375edf72c6ab1d10ac80c6; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before 9263b9ad968a563337a60e0eb66e35186e1faf9a; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before 1d3a7d7dd3adee19e00be2b2237140f0fe169484; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before f5acb824277a97a5210c454872202bf7f08c75d4; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before ae18d2d2ef27a4d04fda6e30c23774513dc9be1e; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before 08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before 9fe22f563b2a0fdb11fd3711a8c39c023629c08a; from b87b0c0f81e8d11c881b726b886b7502ab67d884 before a130404ce0b69ca1438126bd81c1985d3b4d2e6f | CNA record |
References
- https://git.kernel.org/stable/c/bac0ed8bee651aa841375edf72c6ab1d10ac80c6
- https://git.kernel.org/stable/c/9263b9ad968a563337a60e0eb66e35186e1faf9a
- https://git.kernel.org/stable/c/1d3a7d7dd3adee19e00be2b2237140f0fe169484
- https://git.kernel.org/stable/c/f5acb824277a97a5210c454872202bf7f08c75d4
- https://git.kernel.org/stable/c/ae18d2d2ef27a4d04fda6e30c23774513dc9be1e
- https://git.kernel.org/stable/c/08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9
- https://git.kernel.org/stable/c/9fe22f563b2a0fdb11fd3711a8c39c023629c08a
- https://git.kernel.org/stable/c/a130404ce0b69ca1438126bd81c1985d3b4d2e6f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.