#VU90275 Out-of-bounds read in Linux kernel - CVE-2021-47535

Vulnerability identifier: #VU90275

Vulnerability risk: Low

CVSSv4.0: 4.3 [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/E:U/U:Clear]

CVE-ID: CVE-2021-47535

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the a6xx_get_gmu_registers() function in drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/d646856a600e8635ba498f20b194219b158626e8
https://git.kernel.org/stable/c/83e54fcf0b14ca2d869dd37abe1bb6542805f538
https://git.kernel.org/stable/c/b4d25abf9720b69a03465b09d0d62d1998ed6708

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.