{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72057", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.903Z", "datePublished": "2026-08-15T05:52:12.873Z", "dateUpdated": "2026-08-15T05:52:12.873Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:52:12.873Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: preserve tc_skb_cb across defragmentation\n\ntcf_ct_handle_fragments() calls nf_ct_handle_fragments() without saving\nand restoring skb->cb. The defrag helper clears IPCB/IP6CB, which aliases\nthe tc_skb_cb/qdisc_skb_cb control buffer. Fragmented traffic through\nact_ct therefore loses qdisc metadata such as pkt_segs and can trigger\nWARN_ON_ONCE() in qdisc_pkt_segs() when panic_on_warn is enabled.\n\nSave and restore the full tc_skb_cb around nf_ct_handle_fragments(),\nmatching the pattern used by ovs_ct_handle_fragments()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_ct.c"], "versions": [{"version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "lessThan": "2400c4b05d58834b994500a9eec90a37db44187c", "status": "affected", "versionType": "git"}, {"version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "lessThan": "5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac", "status": "affected", "versionType": "git"}, {"version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "lessThan": "b3d835407846134b0d54637c0281b39bebef831d", "status": "affected", "versionType": "git"}, {"version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "lessThan": "f7f45ceb855d9ba1cba594fb3f383255f7013fad", "status": "affected", "versionType": "git"}, {"version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "lessThan": "9092e15defbe6c7bc241c306093ca9d358a578e7", "status": "affected", "versionType": "git"}, {"version": "0d76daf2013ce1da20eab5e26bd81d983e1c18fb", "status": "affected", "versionType": "git"}, {"version": "5.15.13", "lessThan": "5.16", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_ct.c"], "versions": [{"version": "5.16", "status": "affected"}, {"version": "0", "lessThan": "5.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "5.16", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.2-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2400c4b05d58834b994500a9eec90a37db44187c"}, {"url": "https://git.kernel.org/stable/c/5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac"}, {"url": "https://git.kernel.org/stable/c/b3d835407846134b0d54637c0281b39bebef831d"}, {"url": "https://git.kernel.org/stable/c/f7f45ceb855d9ba1cba594fb3f383255f7013fad"}, {"url": "https://git.kernel.org/stable/c/9092e15defbe6c7bc241c306093ca9d358a578e7"}], "title": "net/sched: act_ct: preserve tc_skb_cb across defragmentation", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sched/act_ct.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2400c4b05d58834b994500a9eec90a37db44187c", "status": "affected", "version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "versionType": "git"}, {"lessThan": "5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac", "status": "affected", "version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "versionType": "git"}, {"lessThan": "b3d835407846134b0d54637c0281b39bebef831d", "status": "affected", "version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "versionType": "git"}, {"lessThan": "f7f45ceb855d9ba1cba594fb3f383255f7013fad", "status": "affected", "version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "versionType": "git"}, {"lessThan": "9092e15defbe6c7bc241c306093ca9d358a578e7", "status": "affected", "version": "ec624fe740b416fb68d536b37fb8eef46f90b5c2", "versionType": "git"}, {"status": "affected", "version": "0d76daf2013ce1da20eab5e26bd81d983e1c18fb", "versionType": "git"}, {"lessThan": "5.16", "status": "affected", "version": "5.15.13", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sched/act_ct.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.16"}, {"lessThan": "5.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: preserve tc_skb_cb across defragmentation\n\ntcf_ct_handle_fragments() calls nf_ct_handle_fragments() without saving\nand restoring skb->cb. The defrag helper clears IPCB/IP6CB, which aliases\nthe tc_skb_cb/qdisc_skb_cb control buffer. Fragmented traffic through\nact_ct therefore loses qdisc metadata such as pkt_segs and can trigger\nWARN_ON_ONCE() in qdisc_pkt_segs() when panic_on_warn is enabled.\n\nSave and restore the full tc_skb_cb around nf_ct_handle_fragments(),\nmatching the pattern used by ovs_ct_handle_fragments()."}], "id": "CVE-2026-72057", "lastModified": "2026-08-15T06:21:15.153", "metrics": {}, "published": "2026-08-15T06:21:15.153", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2400c4b05d58834b994500a9eec90a37db44187c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9092e15defbe6c7bc241c306093ca9d358a578e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b3d835407846134b0d54637c0281b39bebef831d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f7f45ceb855d9ba1cba594fb3f383255f7013fad"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec624fe740b416fb68d536b37fb8eef46f90b5c2,2400c4b05d58834b994500a9eec90a37db44187c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec624fe740b416fb68d536b37fb8eef46f90b5c2,5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec624fe740b416fb68d536b37fb8eef46f90b5c2,b3d835407846134b0d54637c0281b39bebef831d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec624fe740b416fb68d536b37fb8eef46f90b5c2,f7f45ceb855d9ba1cba594fb3f383255f7013fad)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec624fe740b416fb68d536b37fb8eef46f90b5c2,9092e15defbe6c7bc241c306093ca9d358a578e7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "0d76daf2013ce1da20eab5e26bd81d983e1c18fb"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.13,5.16)"}}], "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": "semver", "value": "5.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-08-15T08:45:05.631738+00:00", "updated": "2026-08-15T12:15:03.199976+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-704", "CWE-682"]}