7.5

CVE-2026-74626

NTB: ntb_netdev: Preserve RX queue depth on allocation failure

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 548c237c0a9972df5d1afaca38aa733ee577128d
Version < a4e340971fe8ccd245d206db4d43b2a0eec240bd
Status affected
Version 548c237c0a9972df5d1afaca38aa733ee577128d
Version < 755fd7843f300d724caceabdf9bb13adc8701540
Status affected
Version 548c237c0a9972df5d1afaca38aa733ee577128d
Version < d2121faf133ac3bf9531b53a7e21273649a08517
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 3.9
Status affected
Version 0
Version < 3.9
Status unaffected
Version <= 6.18.*
Version 6.18.46
Status unaffected
Version <= 7.1.*
Version 7.1.9
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.06
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/755fd7843f300d724caceabdf9bb13adc8701540
https://git.kernel.org/stable/c/a4e340971fe8ccd245d206db4d43b2a0eec240bd
https://git.kernel.org/stable/c/d2121faf133ac3bf9531b53a7e21273649a08517