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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已被修复： 固件：arm_scmi：验证 SENSOR_UPDATE 负载大小 SENSOR_UPDATE 消息在固定的通知头之后携带一个或多个传感器读数。解析器会根据传感器描述推导出预期的读数数量，但在解析之前，并未验证接收到的负载是否确实包含这些条目。 在读取可变数组之前，拒绝截断的更新通知。

AI Predicted 7.8 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< e543d60f966a5f5c92298720c2fd1810f85a6be3 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 87a72e75f7560ea45cd28870194eaa153dd19e75 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1bbe431fc59704d012660647516f6f94ddd82564 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c148ff2f5a168e0bc41d801efca6ee35a376cfcb affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 767789a58ae0d65ec3028e5b5b4da82210355d00 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 32bc5496b48174dbca1f187f710955ee4d9527a1 affected
< 5.15.222 affected
< 6.1.189 affected
… +9 more rows
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I. Basic Information for CVE-2026-98893

Vulnerability Information
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Vulnerability Title
firmware: arm_scmi: Validate SENSOR_UPDATE payload size
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ e543d60f966a5f5c92298720c2fd1810f85a6be3 -
Linux Linux 5.15.222 ~ 5.15.* -

II. Public POCs for CVE-2026-98893

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III. Intelligence Information for CVE-2026-98893

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Patches & Fixes for CVE-2026-98893 (6)

Same Patch Batch · Linux · 2026-10-23 · 218 CVEs total

CVE-2026-98938 rust: irq: pass RegistrationInner as cookie to request_irq
CVE-2026-98951 riscv: ptrace: Zero-initialize regset buffers before copyin
CVE-2026-98950 flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()
CVE-2026-98949 drm/imagination: Fix reference and vm_bo handling in remap()
CVE-2026-98948 mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
CVE-2026-98947 vsock: Fix memory leak in vmci_transport_recv_dgram_cb()
CVE-2026-98946 drm/vc4: Disable the V3D interrupt across runtime suspend
CVE-2026-98945 HID: steam: Rearrange teardown sequence
CVE-2026-98944 HID: steam: Refactor registration
CVE-2026-98943 HID: steam: Clean up locking
CVE-2026-98942 sched_ext: Build the cid tables privately and publish them with RCU
CVE-2026-98941 ext4: don't enable large folios on encrypted inodes
CVE-2026-98940 ASoC: qcom: lpass-cpu: use DAI table index for playback constraints
CVE-2026-98939 x86/mm: Drop unnecessary PMD page copy when freeing
CVE-2026-98927 KVM: arm64: nv: Fix life cycle of the nested_mmus array
CVE-2026-98930 KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
CVE-2026-98929 macsec: initialize SecY before registering the netdevice
CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2
CVE-2026-98931 mtd: spinand: fix NULL pointer dereference with no ECC engine
CVE-2026-98926 drm/amd/display: Remove sink usage from DPMS

Showing top 20 of 218 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98893

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