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Vulnerabilities CVE-2026-74626

CVE-2026-74626

None
Open
TLP:CLEAR

NTB: ntb_netdev: Preserve RX queue depth on allocation failure

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Description

In the Linux kernel, the following vulnerability has been resolved: NTB: ntb_netdev: Preserve RX queue depth on allocation failure ntb_netdev_rx_handler() hands the received skb to the network stack before allocating its replacement. If the allocation fails, nothing is reposted. Every failure therefore takes one buffer out of the RX queue while the interface remains up, and enough failures eventually stall reception. A retry path could refill the queue later, but ntb_netdev has none. Allocate the replacement first instead. If that fails, drop the packet and repost the same skb. This keeps the queue full and lets packet delivery resume as soon as memory is available again.

Details

Confidence
90%
Published
Aug 22, 2026
Last Modified
Aug 22, 2026
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