Answer in brief
CVE-2026-74626 records a High severity (CVSS 7.5) vulnerability in NTB: ntb_netdev: Preserve RX queue depth on allocation failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=548c237c0a9972df5d1afaca38aa733ee577128d <755fd7843f300d724caceabdf9bb13adc8701540 || >=548c237c0a9972df5d1afaca38aa733ee577128d <d2121faf133ac3bf9531b53a7e21273649a08517 | 755fd7843f300d724caceabdf9bb13adc8701540, d2121faf133ac3bf9531b53a7e21273649a08517 |
| Linux/Linuxgeneric | >=548c237c0a9972df5d1afaca38aa733ee577128d <a4e340971fe8ccd245d206db4d43b2a0eec240bd || >=548c237c0a9972df5d1afaca38aa733ee577128d <755fd7843f300d724caceabdf9bb13adc8701540 || >=548c237c0a9972df5d1afaca38aa733ee577128d <d2121faf133ac3bf9531b53a7e21273649a08517 | a4e340971fe8ccd245d206db4d43b2a0eec240bd, 755fd7843f300d724caceabdf9bb13adc8701540, d2121faf133ac3bf9531b53a7e21273649a08517 |
| Linux/Linuxgeneric | 3.9 | Not reported |
| Linux/Linuxgeneric | >=548c237c0a9972df5d1afaca38aa733ee577128d <6d7f8a23c130d768c0976c2578b214353674e18f || >=548c237c0a9972df5d1afaca38aa733ee577128d <18781cc0bfb5c7f2a51ac6d678a28f101b7c35c5 || >=548c237c0a9972df5d1afaca38aa733ee577128d <272df0fbe6f3e04e22bc67fbdd9ac24586b942f4 || >=548c237c0a9972df5d1afaca38aa733ee577128d <fcaf8ba7e56bb73319ac107a63b907d59536192c || >=548c237c0a9972df5d1afaca38aa733ee577128d <3f2a15f33f86f7bd5b920669fd40c06725d72a1e || >=548c237c0a9972df5d1afaca38aa733ee577128d <a4e340971fe8ccd245d206db4d43b2a0eec240bd || >=548c237c0a9972df5d1afaca38aa733ee577128d <755fd7843f300d724caceabdf9bb13adc8701540 || >=548c237c0a9972df5d1afaca38aa733ee577128d <d2121faf133ac3bf9531b53a7e21273649a08517 | 6d7f8a23c130d768c0976c2578b214353674e18f, 18781cc0bfb5c7f2a51ac6d678a28f101b7c35c5, 272df0fbe6f3e04e22bc67fbdd9ac24586b942f4, fcaf8ba7e56bb73319ac107a63b907d59536192c, 3f2a15f33f86f7bd5b920669fd40c06725d72a1e, a4e340971fe8ccd245d206db4d43b2a0eec240bd, 755fd7843f300d724caceabdf9bb13adc8701540, d2121faf133ac3bf9531b53a7e21273649a08517 |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
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.
Quoted source text, attributed separately from HOL analysis.