CVE Watch4 ago 2026

CVE-2021-47081

In the Linux kernel, the following vulnerability has been resolved: habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device

CVSS

7.8

Alto

EPSS

0.2%

p14

KEV

—

Exploit Today

0-100

Publicado: 1 mar 2024 · Última mod.: 4 ago 2026 · CWE-416

EPSS · 30d

0.2%EPSS · 30 días0.2%

2026-07-282026-08-24

Descripción técnica

In the Linux kernel, the following vulnerability has been resolved: habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory Our code analyzer reported a uaf. In gaudi_memset_device_memory, cb is get via hl_cb_kernel_create() with 2 refcount. If hl_cs_allocate_job() failed, the execution runs into release_cb branch. One ref of cb is dropped by hl_cb_put(cb) and could be freed if other thread also drops one ref. Then cb is used by cb->id later, which is a potential uaf. My patch add a variable 'id' to accept the value of cb->id before the hl_cb_put(cb) is called, to avoid the potential uaf.

Referencias oficiales

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