PT-2026-64345 · Linux · Linux

CVE-2026-64230 · Publicado 2026-07-24 · Atualizado 2026-07-24

Mitre

In the Linux kernel, the following vulnerability has been resolved:

regulator: tps65219: fix irq data.rdev not being assigned

Commit 64a6b577490c ("regulator: tps65219: Remove debugging helper function") removed the tps65219 get rdev by name() helper along with the irq data.rdev assignment that depended on it. This left irq data.rdev uninitialized for all IRQs, causing undefined behavior when regulator notifier call chain() is called from the IRQ handler:

Internal error: Oops: 0000000096000004 pc : regulator notifier call chain lr : tps65219 regulator irq handler Call trace: regulator notifier call chain tps65219 regulator irq handler handle nested irq regmap irq thread irq thread fn irq thread kthread ret from fork

Instead of restoring a dedicated lookup array, restructure the probe function to combine regulator registration with IRQ registration in the same loop. This way the rdev returned by devm regulator register() is naturally available for assigning to irq data.rdev without any auxiliary data structure.

Non-regulator IRQs (SENSOR, TIMEOUT) that don't correspond to any registered regulator are registered with rdev=NULL, and the IRQ handler is protected with a NULL check to avoid crashing.

Identificadores relacionados

CVE-2026-64230

Produtos afetados

Linux

Referências · 4

• https://git.kernel.org/stable/c/b986f88b22a5374191c195c073350bbeb1bb6518 · Nota
• https://git.kernel.org/stable/c/6827647fd2dcf4e7f355478a42e82f51e0b5344c · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-64230 · Nota de Segurança
• https://git.kernel.org/stable/c/f9b2d3b703d13df50c630997dfdc25648e96db0d · Nota