{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72427", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.928Z", "datePublished": "2026-08-15T05:56:44.197Z", "dateUpdated": "2026-08-15T05:56:44.197Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:56:44.197Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix effective prog array index with BPF_F_PREORDER\n\nreplace_effective_prog() and purge_effective_progs() located the slot in\nthe effective array by walking the program hlist and counting entries\nlinearly. That count does not match the array layout: compute_effective_\nprogs() places BPF_F_PREORDER programs at the front (ancestor cgroup\nfirst, attach order within a cgroup) and the rest after them (descendant\ncgroup first). So when a preorder program is present, the linear hlist\nposition no longer equals the program's index in the effective array.\n\nFor replace_effective_prog() (bpf_link_update()) this overwrote the\nwrong slot, corrupting the effective order. For purge_effective_progs(),\nit could dummy out a slot belonging to a different program and leave the\ndetached program in the array while bpf_prog_put() drops its reference,\ni.e. a use-after-free.\n\nFix both by replaying compute_effective_progs()'s placement (including\nthe per-cgroup preorder reversal) in a shared effective_prog_pos()\nhelper. Identify the entry by its struct bpf_prog_list pointer rather\nthan by (prog, link) value, so the lookup resolves to exactly the\nattachment the syscall selected even when the same bpf_prog is attached\nto several cgroups in the hierarchy."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/cgroup.c"], "versions": [{"version": "bc8023ef3b11410682e5d4990e05e5bc2d3e1c94", "lessThan": "525e408c27ae714e538b8c608c3a974df3ab6c92", "status": "affected", "versionType": "git"}, {"version": "555c0b713ca83968d3c843cb15485b9ba3367b1b", "lessThan": "41b4320b84fdafe1ab586b06453d30d50415db59", "status": "affected", "versionType": "git"}, {"version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "lessThan": "9697db03e010391c55ae75192cbdf30c5a72c114", "status": "affected", "versionType": "git"}, {"version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "lessThan": "b584f107ab90222bd825dcb4c5977326ff684109", "status": "affected", "versionType": "git"}, {"version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "lessThan": "f08aaee3152d0dfc578b3f2586932d82062701dd", "status": "affected", "versionType": "git"}, {"version": "4707ad649cf662add3058bff47430817811b048d", "status": "affected", "versionType": "git"}, {"version": "6.6.93", "lessThan": "6.6.145", "status": "affected", "versionType": "semver"}, {"version": "6.12.31", "lessThan": "6.12.97", "status": "affected", "versionType": "semver"}, {"version": "6.14.9", "lessThan": "6.15", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/cgroup.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "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": "6.6.93", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.31", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.9"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/525e408c27ae714e538b8c608c3a974df3ab6c92"}, {"url": "https://git.kernel.org/stable/c/41b4320b84fdafe1ab586b06453d30d50415db59"}, {"url": "https://git.kernel.org/stable/c/9697db03e010391c55ae75192cbdf30c5a72c114"}, {"url": "https://git.kernel.org/stable/c/b584f107ab90222bd825dcb4c5977326ff684109"}, {"url": "https://git.kernel.org/stable/c/f08aaee3152d0dfc578b3f2586932d82062701dd"}], "title": "bpf: Fix effective prog array index with BPF_F_PREORDER", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/cgroup.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "525e408c27ae714e538b8c608c3a974df3ab6c92", "status": "affected", "version": "bc8023ef3b11410682e5d4990e05e5bc2d3e1c94", "versionType": "git"}, {"lessThan": "41b4320b84fdafe1ab586b06453d30d50415db59", "status": "affected", "version": "555c0b713ca83968d3c843cb15485b9ba3367b1b", "versionType": "git"}, {"lessThan": "9697db03e010391c55ae75192cbdf30c5a72c114", "status": "affected", "version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "versionType": "git"}, {"lessThan": "b584f107ab90222bd825dcb4c5977326ff684109", "status": "affected", "version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "versionType": "git"}, {"lessThan": "f08aaee3152d0dfc578b3f2586932d82062701dd", "status": "affected", "version": "4b82b181a26cff8bf7adc3a85a88d121d92edeaf", "versionType": "git"}, {"status": "affected", "version": "4707ad649cf662add3058bff47430817811b048d", "versionType": "git"}, {"lessThan": "6.6.145", "status": "affected", "version": "6.6.93", "versionType": "semver"}, {"lessThan": "6.12.97", "status": "affected", "version": "6.12.31", "versionType": "semver"}, {"lessThan": "6.15", "status": "affected", "version": "6.14.9", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/cgroup.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"lessThan": "6.15", "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\nbpf: Fix effective prog array index with BPF_F_PREORDER\n\nreplace_effective_prog() and purge_effective_progs() located the slot in\nthe effective array by walking the program hlist and counting entries\nlinearly. That count does not match the array layout: compute_effective_\nprogs() places BPF_F_PREORDER programs at the front (ancestor cgroup\nfirst, attach order within a cgroup) and the rest after them (descendant\ncgroup first). So when a preorder program is present, the linear hlist\nposition no longer equals the program's index in the effective array.\n\nFor replace_effective_prog() (bpf_link_update()) this overwrote the\nwrong slot, corrupting the effective order. For purge_effective_progs(),\nit could dummy out a slot belonging to a different program and leave the\ndetached program in the array while bpf_prog_put() drops its reference,\ni.e. a use-after-free.\n\nFix both by replaying compute_effective_progs()'s placement (including\nthe per-cgroup preorder reversal) in a shared effective_prog_pos()\nhelper. Identify the entry by its struct bpf_prog_list pointer rather\nthan by (prog, link) value, so the lookup resolves to exactly the\nattachment the syscall selected even when the same bpf_prog is attached\nto several cgroups in the hierarchy."}], "id": "CVE-2026-72427", "lastModified": "2026-08-15T06:22:16.520", "metrics": {}, "published": "2026-08-15T06:22:16.520", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41b4320b84fdafe1ab586b06453d30d50415db59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/525e408c27ae714e538b8c608c3a974df3ab6c92"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9697db03e010391c55ae75192cbdf30c5a72c114"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b584f107ab90222bd825dcb4c5977326ff684109"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f08aaee3152d0dfc578b3f2586932d82062701dd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bc8023ef3b11410682e5d4990e05e5bc2d3e1c94,525e408c27ae714e538b8c608c3a974df3ab6c92)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[555c0b713ca83968d3c843cb15485b9ba3367b1b,41b4320b84fdafe1ab586b06453d30d50415db59)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b82b181a26cff8bf7adc3a85a88d121d92edeaf,9697db03e010391c55ae75192cbdf30c5a72c114)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b82b181a26cff8bf7adc3a85a88d121d92edeaf,b584f107ab90222bd825dcb4c5977326ff684109)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4b82b181a26cff8bf7adc3a85a88d121d92edeaf,f08aaee3152d0dfc578b3f2586932d82062701dd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4707ad649cf662add3058bff47430817811b048d,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.93,6.6.145)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.31,6.12.97)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.14.9,6.15)"}}], "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": "[6.15,*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,7.0.0)"}}, {"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": "2026-08-15T18:15:03.781297+00:00", "updated": "2026-08-16T00:30:04.969970+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}