CVE-2026-72424

Summary

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

rtc: msc313: fix NULL deref in shared IRQ handler at probe

msc313_rtc_probe() calls devm_request_irq() with IRQF_SHARED and &pdev->dev as the cookie, but platform_set_drvdata() is only called later after the clock setup. With a shared IRQ line, another device on the same line can trigger the handler in that window. The handler does dev_get_drvdata() on the cookie, gets NULL, and dereferences priv->rtc_base in interrupt context.

Pass priv as the cookie directly so the handler reads it from dev_id without the lookup, removing the dependency on probe order.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < ece7b9ffde23e2ccd7567761ac27463ded43932caffected
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < 52c73b6992b46ed476590ed526faa033d4fbfc5daffected
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < bc1f61a9b97d65de21c2681bcf0b5b1392c58486affected
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < 1f6a4aec0d36647eb2f67cd69db22bd28cabe2cbaffected
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < bb3e624808c981fe881cb79037be63e680ed7d38affected
LinuxLinuxbe7d9c9161b9c76edeff15e79edc2f256568fe05 < a369f48be8de426a7d2bca18dbd46c2ad1138803affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References