SB20261022327 - Use of uninitialized resource in Linux kernel nand raw driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use of uninitialized resource (CVE-ID: CVE-2026-98721)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially cause a denial of service.

The vulnerability exists due to use of uninitialized synchronization resources in the Linux kernel Cadence NAND interrupt handler when a pending interrupt is handled after IRQ registration but before initialization of the IRQ lock and completion object. A local user can potentially exploit this initialization window to disrupt kernel operation and cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1ed0ccd5649154bfc00ab11c59262d4f42515252
• https://git.kernel.org/stable/c/21f027016b1290d13c30b198ae7a00e6b3d1d5a5
• https://git.kernel.org/stable/c/24319f25b641e55f84e55455092a39a2485c78d4
• https://git.kernel.org/stable/c/bbd87eca5407288f2b63ff9357c611cd57e7e640
• https://git.kernel.org/stable/c/c69d8aceda362c95bbc4e2182f5829275a7db0c8