CVE-2026-74271 power: supply: core: fix supplied_from allocations
A buffer overflow in the Linux kernel power supply core allows local attackers to cause denial of service or potentially execute code via crafted device tree properties.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-74271?
CVE-2026-74271 is a memory corruption vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
power: supply: core: fix supplied_from allocations
If dts property power-supplies has multiple values, then accessing to psy->supplied_from[i-1] in __power_supply_populate_supplied_from will overrun supplied_from array.
Which versions are affected by CVE-2026-74271?
How do I fix CVE-2026-74271?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-74271 being exploited?
There is no known exploitation of CVE-2026-74271 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74271, DEBIAN-CVE-2026-74271, GHSA-39rv-mmw2-58p4, UBUNTU-CVE-2026-74271.