CVE-2026-93270

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93270", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.097Z", "datePublished": "2026-09-24T15:52:09.868Z", "dateUpdated": "2026-10-19T09:08:24.811Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:24.811Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off>'.\n\nHowever, the interpreter ignores the 'off' at its ALU64_MOV_X label.\nThe 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when\nthe interpreter loads memory from the register, it will hit a page\nfault.\n\n[ 2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034\n[ 2.546485] #PF: supervisor read access in kernel mode\n[ 2.547167] #PF: error_code(0x0000) - not-present page\n[ 2.547850] PGD 134e63067 P4D 134e63067 PUD 134e64063 PMD 10021c063 PTE 800ffffeca550062\n[ 2.548912] Oops: Oops: 0000 [#1] SMP PTI\n\nSet jit_required as true in order to disallow interpreter fallback in\ncore.c::__bpf_prog_select_runtime(), if any BPF_ADDR_PERCPU insn is\npatched to the prog.\n\nBTW, rename the helper bpf_map_supports_cpu_flags() to\nbpf_map_is_percpu_map()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/bpf.h", "kernel/bpf/fixups.c"], "versions": [{"version": "7bdbf7446305cb65c510c16d57cde82bc76b234a", "lessThan": "57cf929a33cb76be3f24886073ae820b4c496914", "status": "affected", "versionType": "git"}, {"version": "7bdbf7446305cb65c510c16d57cde82bc76b234a", "lessThan": "7a0855e73757ee9cf25ba635a1c735018ecba742", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/bpf.h", "kernel/bpf/fixups.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "6.10", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/57cf929a33cb76be3f24886073ae820b4c496914"}, {"url": "https://git.kernel.org/stable/c/7a0855e73757ee9cf25ba635a1c735018ecba742"}], "title": "bpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["include/linux/bpf.h", "kernel/bpf/fixups.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "57cf929a33cb76be3f24886073ae820b4c496914", "status": "affected", "version": "7bdbf7446305cb65c510c16d57cde82bc76b234a", "versionType": "git"}, {"lessThan": "7a0855e73757ee9cf25ba635a1c735018ecba742", "status": "affected", "version": "7bdbf7446305cb65c510c16d57cde82bc76b234a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["include/linux/bpf.h", "kernel/bpf/fixups.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"lessThan": "6.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off>'.\n\nHowever, the interpreter ignores the 'off' at its ALU64_MOV_X label.\nThe 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when\nthe interpreter loads memory from the register, it will hit a page\nfault.\n\n[ 2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034\n[ 2.546485] #PF: supervisor read access in kernel mode\n[ 2.547167] #PF: error_code(0x0000) - not-present page\n[ 2.547850] PGD 134e63067 P4D 134e63067 PUD 134e64063 PMD 10021c063 PTE 800ffffeca550062\n[ 2.548912] Oops: Oops: 0000 [#1] SMP PTI\n\nSet jit_required as true in order to disallow interpreter fallback in\ncore.c::__bpf_prog_select_runtime(), if any BPF_ADDR_PERCPU insn is\npatched to the prog.\n\nBTW, rename the helper bpf_map_supports_cpu_flags() to\nbpf_map_is_percpu_map()."}], "id": "CVE-2026-93270", "lastModified": "2026-10-19T10:17:18.460", "metrics": {}, "published": "2026-09-24T16:17:24.020", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57cf929a33cb76be3f24886073ae820b4c496914"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7a0855e73757ee9cf25ba635a1c735018ecba742"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn", "id": "2540368", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540368"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off>'.\nHowever, the interpreter ignores the 'off' at its ALU64_MOV_X label.\nThe 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when\nthe interpreter loads memory from the register, it will hit a page\nfault.\n[ 2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034\n[ 2.546485] #PF: supervisor read access in kernel mode\n[ 2.547167] #PF: error_code(0x0000) - not-present page\n[ 2.547850] PGD 134e63067 P4D 134e63067 PUD 134e64063 PMD 10021c063 PTE 800ffffeca550062\n[ 2.548912] Oops: Oops: 0000 [#1] SMP PTI\nSet jit_required as true in order to disallow interpreter fallback in\ncore.c::__bpf_prog_select_runtime(), if any BPF_ADDR_PERCPU insn is\npatched to the prog.\nBTW, rename the helper bpf_map_supports_cpu_flags() to\nbpf_map_is_percpu_map().", "A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. When the BPF interpreter processes specific per-CPU instructions instead of using Just-In-Time (JIT) compilation, it fails to properly handle memory offset calculations. A local user could exploit this flaw by loading a crafted BPF program, causing an unhandled kernel page fault that leads to a system crash and Denial of Service (DoS)."], "name": "CVE-2026-93270", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93270\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93270\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93270.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7bdbf7446305cb65c510c16d57cde82bc76b234a,57cf929a33cb76be3f24886073ae820b4c496914)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7bdbf7446305cb65c510c16d57cde82bc76b234a,7a0855e73757ee9cf25ba635a1c735018ecba742)"}}], "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": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "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": "2026-09-25T06:30:06.210862+00:00", "updated": "2026-10-01T23:30:14.989685+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}