{"id":"CVE-2026-74626","revision":"bf520e359c6841039dbd9c1c6b3213be","records":[{"revision":"bf520e359c6841039dbd9c1c6b3213be","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74626","aliases":[],"title":"NTB: ntb_netdev: Preserve RX queue depth on allocation failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_netdev: Preserve RX queue depth on allocation failure\n\nntb_netdev_rx_handler() hands the received skb to the network stack\nbefore allocating its replacement. If the allocation fails, nothing is\nreposted. Every failure therefore takes one buffer out of the RX queue\nwhile the interface remains up, and enough failures eventually stall\nreception.\n\nA retry path could refill the queue later, but ntb_netdev has none.\nAllocate the replacement first instead. If that fails, drop the packet\nand repost the same skb. This keeps the queue full and lets packet\ndelivery resume as soon as memory is available again.","state":0,"publishedAt":"2026-08-22T15:32:08.687+00:00","modifiedAt":"2026-10-16T19:06:03.263+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ntb_netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"6d7f8a23c130d768c0976c2578b214353674e18f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"18781cc0bfb5c7f2a51ac6d678a28f101b7c35c5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"272df0fbe6f3e04e22bc67fbdd9ac24586b942f4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"fcaf8ba7e56bb73319ac107a63b907d59536192c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"3f2a15f33f86f7bd5b920669fd40c06725d72a1e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"a4e340971fe8ccd245d206db4d43b2a0eec240bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"755fd7843f300d724caceabdf9bb13adc8701540\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"548c237c0a9972df5d1afaca38aa733ee577128d\",\n                            \"lessThan\": \"d2121faf133ac3bf9531b53a7e21273649a08517\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ntb_netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.267\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.218\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.185\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.154\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.106\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.46\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.9\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6d7f8a23c130d768c0976c2578b214353674e18f","https://git.kernel.org/stable/c/18781cc0bfb5c7f2a51ac6d678a28f101b7c35c5","https://git.kernel.org/stable/c/272df0fbe6f3e04e22bc67fbdd9ac24586b942f4","https://git.kernel.org/stable/c/fcaf8ba7e56bb73319ac107a63b907d59536192c","https://git.kernel.org/stable/c/3f2a15f33f86f7bd5b920669fd40c06725d72a1e","https://git.kernel.org/stable/c/a4e340971fe8ccd245d206db4d43b2a0eec240bd","https://git.kernel.org/stable/c/755fd7843f300d724caceabdf9bb13adc8701540","https://git.kernel.org/stable/c/d2121faf133ac3bf9531b53a7e21273649a08517"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74626","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74626","identifiers":["CVE-2026-74626"]},"retained":false,"historicalAffected":[]}],"coverage":[]}