CVE-2026-74626
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.
Affected versions
Linux kernel versions
3.9
and later are affected. Fixed in
7.1.9,
7.2
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-74626?
CVE-2026-74626 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.9 onward and has been patched in 7.1.9 and 7.2. CVE-2026-74626 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74626?
Yes. CVE-2026-74626 has been patched. Fixed versions include 7.1.9 and 7.2. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74626 actively exploited?
No. CVE-2026-74626 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.