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CVE-2026-43279 is an out-of-bounds write vulnerability in the Linux kernel ALSA USB-audio subsystem. During pre-playback silencing of playback URB packets in implicit-feedback mode, prepare_silent_urb() assumed that received packet data fit the transfer buffer. A mismatch between capture- and playback-stream configurations, including one caused by USB core maximum-packet-size constraints, can violate this assumption and cause copying beyond the destination buffer. The fix validates the transfer-buffer size, stops copying on overflow, and propagates the transfer error. It prevents the resulting kernel Oops but does not correct the underlying playback-stream inconsistency.
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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.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Unity Linux local vulnerability requiring local access and low privileges, with high potential impact to confidentiality, integrity, and availability.
A vulnerability tracked as CVE-2026-43279 referenced in a Unity Linux local security check advisory.
A Linux kernel ALSA usb-audio vulnerability involving out-of-bounds writes during silencing.
A Linux kernel ALSA usb-audio vulnerability involving out-of-bounds writes during silencing handling.
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.