CVE-2026-46322

{"id": "CVE-2026-46322", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.5}]}, "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": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "793385c154771603b8671dd8338927221e9d8d78", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "2638a9c1521905bb5c5d1e95c8fbc09f79148ed7", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "60d9c0d6cdde5420d6483c921b16fe5465eb5238", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "d16e38fac09a47bfcf98c1ad65a1bb53f94540f5", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "aa308e9dbb9acb17cacdbbce9e4504f69bac8385", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "4fefc6156a162a9f50035c12091a5e5130c82c6e", "versionType": "git"}, {"status": "affected", "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c", "lessThan": "aa8963fdce667a42fb7f0bdd2909fadcab02f9a8", "versionType": "git"}], "programFiles": ["drivers/net/tun.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"status": "unaffected", "version": "0", "lessThan": "4.20", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.259", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.210", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.93", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.35", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.12", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/tun.c"], "defaultStatus": "affected"}]}], "published": "2026-06-09T13:16:37.603", "references": [{"url": "https://git.kernel.org/stable/c/2638a9c1521905bb5c5d1e95c8fbc09f79148ed7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/60d9c0d6cdde5420d6483c921b16fe5465eb5238", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/793385c154771603b8671dd8338927221e9d8d78", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ntun: liberar p\u00e1gina en caso de fallo de build_skb() en tun_xdp_one()\n\nCuando build_skb() falla en tun_xdp_one(), la funci\u00f3n establece ret en -ENOMEM y salta a la etiqueta out, la cual retorna sin liberar la p\u00e1gina que vhost_net_build_xdp() asign\u00f3 para el frame. Al igual que con la ruta de rechazo de frames cortos, tun_sendmsg() descarta el error por b\u00fafer y a\u00fan retorna total_len, por lo que vhost_tx_batch() toma la ruta de \u00e9xito y nunca libera la p\u00e1gina. Cada fallo de build_skb() en un lote fuga un fragmento de p\u00e1gina.\n\nLiberar la p\u00e1gina antes de tomar la ruta de error, coincidiendo con el put_page() que las otras salidas de error de tun_xdp_one() ya realizan."}], "lastModified": "2026-07-23T08:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E9DE7899-6954-4BE5-89B6-A96342AF8401", "versionEndExcluding": "5.10.259", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5E938CDF-D1C4-43D0-98DC-9E11B6B55801", "versionEndExcluding": "5.15.210", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C4446623-5F2B-4DD8-8666-9FAAC285A757", "versionEndExcluding": "6.1.176", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9062F1CD-CAD6-4EA2-A73F-C06D4A887B8C", "versionEndExcluding": "6.6.143", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1E73413E-0629-41AA-A4D3-5A3D10A0BD63", "versionEndExcluding": "6.12.93", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0FCCB23A-7629-4386-93B6-B119237C4382", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9161A938-0FA8-44BC-95FE-C5A271601AB3", "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}