CVE-2026-98075

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98075", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.074Z", "datePublished": "2026-09-25T10:24:14.472Z", "dateUpdated": "2026-10-19T09:13:24.903Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:13:24.903Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: reject BPF_PSEUDO_FUNC reference to the main program\n\nfixups.c:jit_subprogs() rewrites BPF_PSEUDO_FUNC loads to contain real\nfunction addresses. This function is invoked from bpf_jit_subprogs()\nonly when env->subprog_cnt > 1. Meaning that for any program like\nbelow:\n\n int main(void *ctx) {\n void *ptr = main;\n ...\n bpf_timer_set_callback(..., ptr);\n ...\n }\n\nThe 'ptr' won't be ever converted to contain an address.\nIn combination with e.g. bpf_timer_set_callback() this would lead to a\nfunction call at a bogus address.\n\nInstead of complicating the implementation, just assume that no useful\nprogram needs main to be a sync or async callback and reject\nBPF_PSEUDO_FUNC loads for the main subprogram."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "c74750dca96f40a1adb9d334f5a3152f44b270c3", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "8cb75f7ada25b1cf25f2f74dec3ba649b9064a09", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "118212417ba0120d99f84154799f8880f07411f4", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "d6c39774ae093c9f7009cc4ae918f18fc1af7ae7", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6", "status": "affected", "versionType": "git"}, {"version": "69c087ba6225b574afb6e505b72cb75242a3d844", "lessThan": "374b2c5561db80fcdd7cdce44af37a49416f61c7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.13", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c74750dca96f40a1adb9d334f5a3152f44b270c3"}, {"url": "https://git.kernel.org/stable/c/314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f"}, {"url": "https://git.kernel.org/stable/c/8cb75f7ada25b1cf25f2f74dec3ba649b9064a09"}, {"url": "https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4"}, {"url": "https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7"}, {"url": "https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6"}, {"url": "https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7"}], "title": "bpf: reject BPF_PSEUDO_FUNC reference to the main program", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c74750dca96f40a1adb9d334f5a3152f44b270c3", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "8cb75f7ada25b1cf25f2f74dec3ba649b9064a09", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "118212417ba0120d99f84154799f8880f07411f4", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "d6c39774ae093c9f7009cc4ae918f18fc1af7ae7", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}, {"lessThan": "374b2c5561db80fcdd7cdce44af37a49416f61c7", "status": "affected", "version": "69c087ba6225b574afb6e505b72cb75242a3d844", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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: reject BPF_PSEUDO_FUNC reference to the main program\n\nfixups.c:jit_subprogs() rewrites BPF_PSEUDO_FUNC loads to contain real\nfunction addresses. This function is invoked from bpf_jit_subprogs()\nonly when env->subprog_cnt > 1. Meaning that for any program like\nbelow:\n\n int main(void *ctx) {\n void *ptr = main;\n ...\n bpf_timer_set_callback(..., ptr);\n ...\n }\n\nThe 'ptr' won't be ever converted to contain an address.\nIn combination with e.g. bpf_timer_set_callback() this would lead to a\nfunction call at a bogus address.\n\nInstead of complicating the implementation, just assume that no useful\nprogram needs main to be a sync or async callback and reject\nBPF_PSEUDO_FUNC loads for the main subprogram."}], "id": "CVE-2026-98075", "lastModified": "2026-10-19T10:18:03.130", "metrics": {}, "published": "2026-09-25T11:17:36.847", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8cb75f7ada25b1cf25f2f74dec3ba649b9064a09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c74750dca96f40a1adb9d334f5a3152f44b270c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis"}

{"bugzilla": {"description": "kernel: bpf: reject BPF_PSEUDO_FUNC reference to the main program", "id": "2541251", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541251"}, "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-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: reject BPF_PSEUDO_FUNC reference to the main program\nfixups.c:jit_subprogs() rewrites BPF_PSEUDO_FUNC loads to contain real\nfunction addresses. This function is invoked from bpf_jit_subprogs()\nonly when env->subprog_cnt > 1. Meaning that for any program like\nbelow:\nint main(void *ctx) {\nvoid *ptr = main;\n...\nbpf_timer_set_callback(..., ptr);\n...\n}\nThe 'ptr' won't be ever converted to contain an address.\nIn combination with e.g. bpf_timer_set_callback() this would lead to a\nfunction call at a bogus address.\nInstead of complicating the implementation, just assume that no useful\nprogram needs main to be a sync or async callback and reject\nBPF_PSEUDO_FUNC loads for the main subprogram.", "A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem. When a BPF program references its main function as a callback, the kernel fails to translate the function reference into a valid memory address. A local user with permissions to load BPF programs could exploit this vulnerability by invoking the unresolved reference, causing a kernel crash and a Denial of Service (DoS)."], "name": "CVE-2026-98075", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not 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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98075\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98075\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98075.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69c087ba6225b574afb6e505b72cb75242a3d844,118212417ba0120d99f84154799f8880f07411f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69c087ba6225b574afb6e505b72cb75242a3d844,d6c39774ae093c9f7009cc4ae918f18fc1af7ae7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69c087ba6225b574afb6e505b72cb75242a3d844,92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[69c087ba6225b574afb6e505b72cb75242a3d844,374b2c5561db80fcdd7cdce44af37a49416f61c7)"}}], "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": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc2,*]"}}], "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": "2026-09-25T15:45:19.068272+00:00", "updated": "2026-09-30T06:00:12.744085+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-704", "CWE-824"]}