What’s Vulnerable › Vulnerabilities

CVE-2026-98893: firmware: arm_scmi: Validate SENSOR_UPDATE payload size

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-26

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Validate SENSOR_UPDATE payload size SENSOR_UPDATE carries one or more sensor readings after the fixed notification header. The parser derives the expected reading count from the sensor description, but it did not verify that the received payload contains those entries before parsing them. Reject truncated update notifications before reading the variable array.

Affected products

• Linux kernel: before 5.15.222; before 6.1.189; before 6.6.158; before 6.12.111; before 6.18.53 — fixed in 5.15.222, 6.1.189, 6.12.111, 6.18.53, 6.6.158, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 5.15.222, 6.1.189, 6.12.111, 6.18.53. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1bbe431fc59704d012660647516f6f94ddd82564
• https://git.kernel.org/stable/c/32bc5496b48174dbca1f187f710955ee4d9527a1
• https://git.kernel.org/stable/c/767789a58ae0d65ec3028e5b5b4da82210355d00
• https://git.kernel.org/stable/c/87a72e75f7560ea45cd28870194eaa153dd19e75
• https://git.kernel.org/stable/c/c148ff2f5a168e0bc41d801efca6ee35a376cfcb
• https://git.kernel.org/stable/c/e543d60f966a5f5c92298720c2fd1810f85a6be3

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