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CVE-2026-63797 is a use-after-free vulnerability in the Linux kernel rpmsg character-device driver. During endpoint-device probing, the driver publishes a newly allocated endpoint-device object through the default endpoint's private pointer before endpoint-device initialization completes. If initialization subsequently fails, the error path frees that object while the default endpoint can still invoke message or flow-control callbacks using the stale pointer. The upstream fix defers publication of the private pointer until initialization succeeds and makes both affected callbacks safely accept a NULL private pointer.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability addressed by Ubuntu USN-8800-1; used as the plugin's CVSS score source.
A Linux kernel vulnerability addressed by Ubuntu security notice USN-8781-1 for Ubuntu 24.04 LTS / Pro Realtime systems using the NVIDIA Tegra kernel package. The supplied content does not provide a flaw-specific technical description.
A Linux kernel vulnerability remediated by Ubuntu security notice USN-8760-1 for affected Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS NVIDIA kernel packages. The cited CVSS v3 vector is local, low-complexity, no-privileges, no-user-interaction, with high confidentiality, integrity, and availability impact.
A Linux kernel vulnerability included in Ubuntu security notice USN-8728-1. The supplied content does not provide its technical flaw description, but identifies it as CISA Known Exploited and indicates exploit availability.
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.