{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-48929", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T06:06:23.298Z", "datePublished": "2024-08-22T03:31:22.329Z", "dateUpdated": "2024-09-12T17:33:00.206Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-08-22T03:31:22.329Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix crash due to out of bounds access into reg2btf_ids.\n\nWhen commit e6ac2450d6de (\"bpf: Support bpf program calling kernel function\") added\nkfunc support, it defined reg2btf_ids as a cheap way to translate the verifier\nreg type to the appropriate btf_vmlinux BTF ID, however\ncommit c25b2ae13603 (\"bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL\")\nmoved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after\nthe base register types, and defined other variants using type flag\ncomposition. However, now, the direct usage of reg->type to index into\nreg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to\nout of bounds access and kernel crash on dereference of bad pointer."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/btf.c"], "versions": [{"version": "e8efe8369944", "lessThan": "8c39925e98d4", "status": "affected", "versionType": "git"}, {"version": "931e56be527f", "lessThan": "f0ce1bc9e023", "status": "affected", "versionType": "git"}, {"version": "c25b2ae13603", "lessThan": "45ce4b4f9009", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/btf.c"], "versions": [{"version": "5.15.15", "lessThan": "5.15.37", "status": "affected", "versionType": "custom"}, {"version": "5.16.1", "lessThan": "5.16.12", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://git.kernel.org/stable/c/8c39925e98d498b9531343066ef82ae39e41adae"}, {"url": "https://git.kernel.org/stable/c/f0ce1bc9e0235dd7412240be493d7ea65ed9eadc"}, {"url": "https://git.kernel.org/stable/c/45ce4b4f9009102cd9f581196d480a59208690c1"}], "title": "bpf: Fix crash due to out of bounds access into reg2btf_ids.", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48929", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:32:56.249126Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:00.206Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BEB734DF-768A-48DC-8983-4ED1A0CA1A3D", "versionEndExcluding": "5.15.37", "versionStartIncluding": "5.15.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4368C931-8568-4F36-A74D-8E41781257A6", "versionEndExcluding": "5.16.12", "versionStartIncluding": "5.16.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix crash due to out of bounds access into reg2btf_ids.\n\nWhen commit e6ac2450d6de (\"bpf: Support bpf program calling kernel function\") added\nkfunc support, it defined reg2btf_ids as a cheap way to translate the verifier\nreg type to the appropriate btf_vmlinux BTF ID, however\ncommit c25b2ae13603 (\"bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL\")\nmoved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after\nthe base register types, and defined other variants using type flag\ncomposition. However, now, the direct usage of reg->type to index into\nreg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to\nout of bounds access and kernel crash on dereference of bad pointer."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf: Se corrigi\u00f3 el bloqueo debido al acceso fuera de los l\u00edmites a reg2btf_ids. Cuando el commit e6ac2450d6de (\"bpf: admite la funci\u00f3n del kernel que llama al programa bpf\") agreg\u00f3 soporte para kfunc, defini\u00f3 reg2btf_ids como una forma econ\u00f3mica de traducir el tipo de registro del verificador al ID de BTF btf_vmlinux apropiado; sin embargo, commit c25b2ae13603 (\"bpf: reemplace PTR_TO_XXX_OR_NULL con PTR_TO_XXX | PTR_MAYBE_NULL\") movi\u00f3 __BPF_REG_TYPE_MAX del \u00faltimo miembro de la enumeraci\u00f3n bpf_reg_type a despu\u00e9s de los tipos de registro base y defini\u00f3 otras variantes utilizando la composici\u00f3n de indicadores de tipo. Sin embargo, ahora, el uso directo de reg->type para indexar en reg2btf_ids ya no puede caer en el rango __BPF_REG_TYPE_MAX y, por lo tanto, provocar un acceso fuera de los l\u00edmites y un bloqueo del kernel al desreferenciar un puntero incorrecto."}], "id": "CVE-2022-48929", "lastModified": "2024-08-23T02:00:22.653", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-08-22T04:15:15.773", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/45ce4b4f9009102cd9f581196d480a59208690c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8c39925e98d498b9531343066ef82ae39e41adae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f0ce1bc9e0235dd7412240be493d7ea65ed9eadc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bpf: Fix crash due to out of bounds access into reg2btf_ids.", "id": "2307185", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2307185"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Fix crash due to out of bounds access into reg2btf_ids.\nWhen commit e6ac2450d6de (\"bpf: Support bpf program calling kernel function\") added\nkfunc support, it defined reg2btf_ids as a cheap way to translate the verifier\nreg type to the appropriate btf_vmlinux BTF ID, however\ncommit c25b2ae13603 (\"bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL\")\nmoved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after\nthe base register types, and defined other variants using type flag\ncomposition. However, now, the direct usage of reg->type to index into\nreg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to\nout of bounds access and kernel crash on dereference of bad pointer."], "name": "CVE-2022-48929", "package_state": [{"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"}], "public_date": "2024-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48929\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48929\nhttps://lore.kernel.org/linux-cve-announce/2024082222-CVE-2022-48929-857d@gregkh/T"], "threat_severity": "Moderate"}