{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46320", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.112Z", "datePublished": "2026-06-09T12:11:12.882Z", "dateUpdated": "2026-06-09T12:11:12.882Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-09T12:11:12.882Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntap: free page on error paths in tap_get_user_xdp()\n\ntap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL,\nand returns -ENOMEM when build_skb() fails. Both paths jump to the err\nlabel without freeing the page that vhost_net_build_xdp() allocated for\nthe frame. tap_sendmsg() discards the per-buffer return value and always\nreturns 0, so vhost_tx_batch() takes the success path and never frees\nthe page; each rejected frame in a batch leaks one page-frag chunk.\n\nFree the page on both error paths, before the skb is built. This is the\ntap counterpart of the same leak in tun_xdp_one()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/tap.c"], "versions": [{"version": "0efac27791ee068075d80f07c55a229b1335ce12", "lessThan": "18a84c35842e19cd3c5534d8cee73d31863f696d", "status": "affected", "versionType": "git"}, {"version": "0efac27791ee068075d80f07c55a229b1335ce12", "lessThan": "3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2", "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/tap.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc6", "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": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.1-rc6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18a84c35842e19cd3c5534d8cee73d31863f696d"}, {"url": "https://git.kernel.org/stable/c/3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2"}], "title": "tap: free page on error paths in tap_get_user_xdp()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntap: free page on error paths in tap_get_user_xdp()\n\ntap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL,\nand returns -ENOMEM when build_skb() fails. Both paths jump to the err\nlabel without freeing the page that vhost_net_build_xdp() allocated for\nthe frame. tap_sendmsg() discards the per-buffer return value and always\nreturns 0, so vhost_tx_batch() takes the success path and never frees\nthe page; each rejected frame in a batch leaks one page-frag chunk.\n\nFree the page on both error paths, before the skb is built. This is the\ntap counterpart of the same leak in tun_xdp_one()."}], "id": "CVE-2026-46320", "lastModified": "2026-06-09T13:16:37.373", "metrics": {}, "published": "2026-06-09T13:16:37.373", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18a84c35842e19cd3c5534d8cee73d31863f696d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}