CVE-2026-74559

In the Linux kernel, the following vulnerability has been resolved: xsk: drain continuation descs after overflow in xsk_build_skb() Fix generic xmit path multi-buffer logic when packets are either too big (count of descriptors exceed MAX_SKB_FRAGS) or an invalid descriptor is included in fragmented packet. Introduce xdp_sock::drain_cont and act upon this flag - when it is set, keep on consuming descriptors from AF_XDP Tx ring and put them directly onto Cq. Previously these descriptors were silently lost and could never be reached again.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982
https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096
https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 13:18

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74559

Mitre link : CVE-2026-74559

CVE.ORG link : CVE-2026-74559

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-74559", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a", "lessThan": "ceb00cb87a22c42d20c39336213db2b843ca9e34", "versionType": "git"}, {"status": "affected", "version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a", "lessThan": "5e94d74e4f3baebaa083288f33b4be7ce0a34982", "versionType": "git"}, {"status": "affected", "version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a", "lessThan": "bd44a6dcd4248883de90f5dad53ae80066e27096", "versionType": "git"}], "programFiles": ["include/net/xdp_sock.h", "net/xdp/xsk.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"status": "unaffected", "version": "0", "lessThan": "6.6", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.44", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.8", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["include/net/xdp_sock.h", "net/xdp/xsk.c"], "defaultStatus": "affected"}]}], "published": "2026-08-15T13:18:01.390", "references": [{"url": "https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: drain continuation descs after overflow in xsk_build_skb()\n\nFix generic xmit path multi-buffer logic when packets are either too big\n(count of descriptors exceed MAX_SKB_FRAGS) or an invalid descriptor is\nincluded in fragmented packet. Introduce xdp_sock::drain_cont and act\nupon this flag - when it is set, keep on consuming descriptors from\nAF_XDP Tx ring and put them directly onto Cq. Previously these\ndescriptors were silently lost and could never be reached again."}], "lastModified": "2026-08-17T06:19:54.007", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}