{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46322","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.112Z","datePublished":"2026-06-09T12:11:14.776Z","dateUpdated":"2026-06-19T12:00:24.388Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-19T12:00:24.388Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntun: free page on build_skb failure in tun_xdp_one()\n\nWhen build_skb() fails in tun_xdp_one(), the function sets ret to\n-ENOMEM and jumps to the out label, which returns without freeing the\npage that vhost_net_build_xdp() allocated for the frame. As with the\nshort-frame rejection path, tun_sendmsg() discards the per-buffer error\nand still returns total_len, so vhost_tx_batch() takes the success path\nand never frees the page. Each build_skb() failure in a batch leaks one\npage-frag chunk.\n\nFree the page before taking the error path, matching the put_page() the\nother error exits of tun_xdp_one() already perform."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/tun.c"],"versions":[{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"793385c154771603b8671dd8338927221e9d8d78","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"2638a9c1521905bb5c5d1e95c8fbc09f79148ed7","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"60d9c0d6cdde5420d6483c921b16fe5465eb5238","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"d16e38fac09a47bfcf98c1ad65a1bb53f94540f5","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"aa308e9dbb9acb17cacdbbce9e4504f69bac8385","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"4fefc6156a162a9f50035c12091a5e5130c82c6e","status":"affected","versionType":"git"},{"version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","lessThan":"aa8963fdce667a42fb7f0bdd2909fadcab02f9a8","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/tun.c"],"versions":[{"version":"4.20","status":"affected"},{"version":"0","lessThan":"4.20","status":"unaffected","versionType":"semver"},{"version":"5.10.259","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.93","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.35","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.12","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9"},{"url":"https://git.kernel.org/stable/c/793385c154771603b8671dd8338927221e9d8d78"},{"url":"https://git.kernel.org/stable/c/2638a9c1521905bb5c5d1e95c8fbc09f79148ed7"},{"url":"https://git.kernel.org/stable/c/60d9c0d6cdde5420d6483c921b16fe5465eb5238"},{"url":"https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5"},{"url":"https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385"},{"url":"https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e"},{"url":"https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8"}],"title":"tun: free page on build_skb failure in tun_xdp_one()","x_generator":{"engine":"bippy-1.2.0"}}}}