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Boot Image Signature Verification Bypass in Qualcomm Snapdragon
A vulnerability in certain Qualcomm Snapdragon chipsets (including MDM9607, MDM9640, SD 425, SD 427, SD 430, SD 435, SD 450, SD 625, SD 636, SD 712/710/670, SD 845/850, SDM660) allows the user keystore signature to be ignored during the boot process. This flaw enables an attacker to bypass boot image signature verification, potentially allowing the execution of unauthorized or malicious boot images.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation allows an attacker to bypass the secure boot process, leading to the execution of arbitrary or malicious boot images. This undermines the integrity of the device's trusted boot chain and can result in persistent compromise, privilege escalation, or installation of rootkits.
If you can’t patch tonight, do this now.
Restrict physical access to affected devices, enable additional device-level security controls where possible, and monitor for unauthorized modifications to the boot image or boot process until a patch is applied.
Patch, then assume compromise.
Apply the vendor-provided firmware or software updates that address the signature verification logic in the boot process. Ensure that all devices are running the latest security patches from Qualcomm or the device manufacturer.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.