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CVE-2021-28664 is a memory corruption vulnerability in the Arm Mali GPU kernel driver in which CPU read-only pages can be made writable. A local unprivileged user can obtain read/write access to memory that should remain read-only, resulting in writes to protected memory pages. The issue affects Mali Midgard, Bifrost, and Valhall driver branches, specifically Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0. The flaw can lead to corruption of kernel or process memory and has been reported as exploited in limited, targeted attacks.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Arm Mali GPU Kernel Driver vulnerability that elevates CPU read-only pages to writable, potentially enabling root privilege escalation, memory corruption, and modification of other processes' memory.
A GPU kernel driver memory corruption vulnerability that can enable unauthorized read/write access to read-only pages; the content states it was exploited in the wild.
A GPU kernel driver vulnerability enabling memory corruption through improper access to read-only pages; the content states it was exploited in the wild.
A writes-to-read-only-memory vulnerability in Arm's Mali GPU referenced as a previously patched Android-related zero-day.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.