Use-after-free LPE in Pixel /dev/bigwave driver
CVE-2025-36934 is a use-after-free vulnerability in bigo_worker_thread in private/google-modules/video/gchips/bigo.c, part of the Google Pixel BigWave/AV1 acceleration driver exposed via /dev/bigwave. The flaw is caused by a race condition that can leave code operating on freed memory. Project Zero reported the bug as the kernel-privilege-escalation stage of a Pixel 9 exploit chain: after achieving code execution in the sandboxed mediacodec process, the attacker pivots to the reachable /dev/bigwave driver and exploits this bug to escape the sandbox and gain kernel-level primitives.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Android BigWave driver used for local privilege escalation (mediacodec to kernel) as part of a Pixel 9 zero-click exploit chain.
A vulnerability in the Pixel chipset /dev/bigwave hardware driver (AV1 acceleration) used to escape the mediacodec sandbox and gain kernel-level primitives as part of a zero-click exploit chain.
Vulnerability in a Pixel 9-accessible kernel/driver attack surface (referenced as a driver reachable from the mediacodec sandbox).
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.