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CVE-2026-98893

Linux: firmware: arm_scmi: Validate SENSOR_UPDATE payload size

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in87a72e75f7560ea45cd28870194eaa153dd19e75Also 1bbe431fc59704d012660647516f6f94ddd82564, 767789a58ae0d65ec3028e5b5b4da82210355d00 and 6 moreCVE List
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

  • 87a72e75f7560ea45cd28870194eaa153dd19e75LinuxCVE List
  • 1bbe431fc59704d012660647516f6f94ddd82564LinuxCVE List
  • 767789a58ae0d65ec3028e5b5b4da82210355d00LinuxCVE List
  • 32bc5496b48174dbca1f187f710955ee4d9527a1LinuxCVE List
  • 5.15.222LinuxCVE List
  • 6.1.189LinuxCVE List
Show all 9 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 17

  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e543d60f966a5f5c92298720c2fd1810f85a6be3CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 87a72e75f7560ea45cd28870194eaa153dd19e75CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1bbe431fc59704d012660647516f6f94ddd82564CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c148ff2f5a168e0bc41d801efca6ee35a376cfcbCVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 767789a58ae0d65ec3028e5b5b4da82210355d00CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 32bc5496b48174dbca1f187f710955ee4d9527a1CVE List
  • Linuxaffected: all versions before 5.15.222CVE List
  • Linuxaffected: all versions before 6.1.189CVE List
  • Linuxaffected: all versions before 6.6.158CVE List
  • Linuxaffected: all versions before 6.12.111CVE List
  • Linuxaffected: all versions before 6.18.53CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 6