SB20261023246 - Resource exhaustion in Linux kernel include asm

Description

This security bulletin contains information about 1 vulnerability.

1) Resource exhaustion (CVE-ID: CVE-2026-98917)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service by triggering a kernel panic.

The vulnerability exists due to insufficient kernel stack allocation in the 64-bit PA-RISC kernel stack configuration when processing workloads that exhaust the available stack. A local user can run a build workload that triggers kernel stack exhaustion to cause a denial of service.

The undersized stack configuration applies when CONFIG_IRQSTACKS is enabled.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/5023c70853ad9829c53d8e9def5ee969b4e1b931
• https://git.kernel.org/stable/c/94b7e3a7e871ae27d4935c76959dfc61829f27f9
• https://git.kernel.org/stable/c/db45f02b7a5f753efc9003f616dfb5ee4cb6d077