Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03

[ Description ]Official description

The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.

CISA: Arm Mali Graphics Processing Unit (GPU) kernel driver contains an unspecified vulnerability that may allow a non-privileged user to gain write access to read-only memory, gain root privilege, corrupt memory, and modify the memory of other processes.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 17 Nov 2021): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20VulnerabilitiesVendor Advisory
• developer.arm.com/support/arm-security-updatesVendor Advisory
• developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driverVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource