{"api_version":"1","generated_at":"2026-06-14T18:37:01+00:00","cve":"CVE-2026-46322","urls":{"html":"https://cve.report/CVE-2026-46322","api":"https://cve.report/api/cve/CVE-2026-46322.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46322","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46322"},"summary":{"title":"tun: free page on build_skb failure in tun_xdp_one()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-09 13:16:37","updated_at":"2026-06-14 06:16:24"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","data":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","data":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8","name":"https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385","name":"https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e","name":"https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5","name":"https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46322","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46322","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 043d222f93ab8c76b56a3b315cd8692e35affb6c d16e38fac09a47bfcf98c1ad65a1bb53f94540f5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 043d222f93ab8c76b56a3b315cd8692e35affb6c aa308e9dbb9acb17cacdbbce9e4504f69bac8385 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 043d222f93ab8c76b56a3b315cd8692e35affb6c 4fefc6156a162a9f50035c12091a5e5130c82c6e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 043d222f93ab8c76b56a3b315cd8692e35affb6c aa8963fdce667a42fb7f0bdd2909fadcab02f9a8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.20","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.93 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.35 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.12 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc6 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46322","cve":"CVE-2026-46322","epss":"0.000180000","percentile":"0.047810000","score_date":"2026-06-13","updated_at":"2026-06-14 00:08:32"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/tun.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d16e38fac09a47bfcf98c1ad65a1bb53f94540f5","status":"affected","version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","versionType":"git"},{"lessThan":"aa308e9dbb9acb17cacdbbce9e4504f69bac8385","status":"affected","version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","versionType":"git"},{"lessThan":"4fefc6156a162a9f50035c12091a5e5130c82c6e","status":"affected","version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","versionType":"git"},{"lessThan":"aa8963fdce667a42fb7f0bdd2909fadcab02f9a8","status":"affected","version":"043d222f93ab8c76b56a3b315cd8692e35affb6c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/tun.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.20"},{"lessThan":"4.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc6","versionStartIncluding":"4.20","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-14T04:30:17.312Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46322","datePublished":"2026-06-09T12:11:14.776Z","dateReserved":"2026-05-13T15:03:33.112Z","dateUpdated":"2026-06-14T04:30:17.312Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-09 13:16:37","lastModifiedDate":"2026-06-14 06:16:24","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.5,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46322","Ordinal":"1","Title":"tun: free page on build_skb failure in tun_xdp_one()","CVE":"CVE-2026-46322","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46322","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"tun: free page on build_skb failure in tun_xdp_one()"}]}}}