{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53228", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.393Z", "datePublished": "2026-06-25T08:39:27.893Z", "dateUpdated": "2026-06-25T08:39:27.893Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:39:27.893Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sit: reload inner IPv6 header after GSO offloads\n\nipip6_tunnel_xmit() caches the inner IPv6 header pointer at function\nentry and continues using it after iptunnel_handle_offloads().\n\nFor GSO skbs, iptunnel_handle_offloads() calls skb_header_unclone().\nWhen the skb header is cloned, skb_header_unclone() can call\npskb_expand_head(), which may move the skb head. The pskb_expand_head()\ncontract requires pointers into the skb header to be reloaded after the\ncall.\n\nIf the later skb_realloc_headroom() branch is not taken, SIT uses the\nstale iph6 pointer to read the inner hop limit and DS field. That can\nread from a freed skb head after the old head's remaining clone is\nreleased.\n\nReload iph6 after the offload helper succeeds and before subsequent\nreads from the inner IPv6 header. Keep the existing reload after\nskb_realloc_headroom(), since that branch can also replace the skb."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/sit.c"], "versions": [{"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "fddd41445a0537b093e6b3f6232c9933cad1e48b", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "1132e5edc2866c3530be17622153a597095f0e43", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "9c67b44edb3598d234efae6e44649eb993c03da5", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "59f80c919713250fe5d25a4d9aea4e49580fa1d4", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "2fa49b2715e1bad12ce3b0fa64e234d9582c8193", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c", "status": "affected", "versionType": "git"}, {"version": "14909664e4e192f4c6f6fcdccd9919af7cf783ab", "lessThan": "f0e42f0c4337b1f220de1ddd63f47197c7dee4de", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/sit.c"], "versions": [{"version": "3.18", "status": "affected"}, {"version": "0", "lessThan": "3.18", "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": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "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": "3.18", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fddd41445a0537b093e6b3f6232c9933cad1e48b"}, {"url": "https://git.kernel.org/stable/c/1132e5edc2866c3530be17622153a597095f0e43"}, {"url": "https://git.kernel.org/stable/c/9c67b44edb3598d234efae6e44649eb993c03da5"}, {"url": "https://git.kernel.org/stable/c/0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0"}, {"url": "https://git.kernel.org/stable/c/59f80c919713250fe5d25a4d9aea4e49580fa1d4"}, {"url": "https://git.kernel.org/stable/c/2fa49b2715e1bad12ce3b0fa64e234d9582c8193"}, {"url": "https://git.kernel.org/stable/c/cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c"}, {"url": "https://git.kernel.org/stable/c/f0e42f0c4337b1f220de1ddd63f47197c7dee4de"}], "title": "ipv6: sit: reload inner IPv6 header after GSO offloads", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: ipv6: sit: reload inner IPv6 header after GSO offloads", "id": "2492733", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492733"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Simple Internet Transition (SIT) tunnel driver for IPv6. When processing network traffic with Generic Segmentation Offload (GSO) enabled, the driver may use a stale pointer to the inner IPv6 header after the socket buffer (skb) head has been reallocated. This can lead to reading from freed memory, potentially allowing an attacker to cause a denial of service or gain access to sensitive information."], "name": "CVE-2026-53228", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53228\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53228\nhttps://lore.kernel.org/linux-cve-announce/2026062507-CVE-2026-53228-f3f1@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,fddd41445a0537b093e6b3f6232c9933cad1e48b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,1132e5edc2866c3530be17622153a597095f0e43)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,9c67b44edb3598d234efae6e44649eb993c03da5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,59f80c919713250fe5d25a4d9aea4e49580fa1d4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,2fa49b2715e1bad12ce3b0fa64e234d9582c8193)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14909664e4e192f4c6f6fcdccd9919af7cf783ab,f0e42f0c4337b1f220de1ddd63f47197c7dee4de)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.1]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-25T11:30:06.463955+00:00", "updated": "2026-06-26T03:00:05.222492+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-590", "CWE-825"]}