{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50203", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.969Z", "datePublished": "2024-11-08T06:07:54.207Z", "dateUpdated": "2024-12-19T09:35:22.525Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T09:35:22.525Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Fix address emission with tag-based KASAN enabled\n\nWhen BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image\nstruct on the stack is passed during the size calculation pass and\nan address on the heap is passed during code generation. This may\ncause a heap buffer overflow if the heap address is tagged because\nemit_a64_mov_i64() will emit longer code than it did during the size\ncalculation pass. The same problem could occur without tag-based\nKASAN if one of the 16-bit words of the stack address happened to\nbe all-ones during the size calculation pass. Fix the problem by\nassuming the worst case (4 instructions) when calculating the size\nof the bpf_tramp_image address emission."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/net/bpf_jit_comp.c"], "versions": [{"version": "19d3c179a37730caf600a97fed3794feac2b197b", "lessThan": "7db1a2121f3c7903b8e397392beec563c3d00950", "status": "affected", "versionType": "git"}, {"version": "19d3c179a37730caf600a97fed3794feac2b197b", "lessThan": "a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/net/bpf_jit_comp.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/7db1a2121f3c7903b8e397392beec563c3d00950"}, {"url": "https://git.kernel.org/stable/c/a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c"}], "title": "bpf, arm64: Fix address emission with tag-based KASAN enabled", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F2A79BF8-4D40-4CD5-9AF5-B6A3B67539DC", "versionEndExcluding": "6.11", "versionStartIncluding": "6.10.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "35973F0F-C32F-4D88-B0FE-C75F65A0002B", "versionEndExcluding": "6.11.6", "versionStartIncluding": "6.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Fix address emission with tag-based KASAN enabled\n\nWhen BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image\nstruct on the stack is passed during the size calculation pass and\nan address on the heap is passed during code generation. This may\ncause a heap buffer overflow if the heap address is tagged because\nemit_a64_mov_i64() will emit longer code than it did during the size\ncalculation pass. The same problem could occur without tag-based\nKASAN if one of the 16-bit words of the stack address happened to\nbe all-ones during the size calculation pass. Fix the problem by\nassuming the worst case (4 instructions) when calculating the size\nof the bpf_tramp_image address emission."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, arm64: Se corrige la emisi\u00f3n de direcciones con KASAN basado en etiquetas habilitado Cuando BPF_TRAMP_F_CALL_ORIG est\u00e1 habilitado, la direcci\u00f3n de una estructura bpf_tramp_image en la pila se pasa durante el paso de c\u00e1lculo de tama\u00f1o y se pasa una direcci\u00f3n en el mont\u00f3n durante la generaci\u00f3n de c\u00f3digo. Esto puede causar un desbordamiento del b\u00fafer del mont\u00f3n si la direcci\u00f3n del mont\u00f3n est\u00e1 etiquetada porque emit_a64_mov_i64() emitir\u00e1 un c\u00f3digo m\u00e1s largo que el que emiti\u00f3 durante el paso de c\u00e1lculo de tama\u00f1o. El mismo problema podr\u00eda ocurrir sin KASAN basado en etiquetas si una de las palabras de 16 bits de la direcci\u00f3n de la pila fuera todo unos durante el paso de c\u00e1lculo de tama\u00f1o. Solucione el problema asumiendo el peor caso (4 instrucciones) al calcular el tama\u00f1o de la emisi\u00f3n de la direcci\u00f3n bpf_tramp_image."}], "id": "CVE-2024-50203", "lastModified": "2024-11-19T16:16:09.207", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2024-11-08T06:15:16.787", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7db1a2121f3c7903b8e397392beec563c3d00950"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bpf, arm64: Fix address emission with tag-based KASAN enabled", "id": "2324615", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324615"}, "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-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf, arm64: Fix address emission with tag-based KASAN enabled\nWhen BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image\nstruct on the stack is passed during the size calculation pass and\nan address on the heap is passed during code generation. This may\ncause a heap buffer overflow if the heap address is tagged because\nemit_a64_mov_i64() will emit longer code than it did during the size\ncalculation pass. The same problem could occur without tag-based\nKASAN if one of the 16-bit words of the stack address happened to\nbe all-ones during the size calculation pass. Fix the problem by\nassuming the worst case (4 instructions) when calculating the size\nof the bpf_tramp_image address emission."], "name": "CVE-2024-50203", "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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "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"}], "public_date": "2024-11-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50203\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50203\nhttps://lore.kernel.org/linux-cve-announce/2024110803-CVE-2024-50203-ca2d@gregkh/T"], "statement": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\nFor the Red Hat Enterprise Linux 8 to confirm the current state, inspect the sysctl with the command:\n# cat /proc/sys/kernel/unprivileged_bpf_disabled\nThe setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw.", "threat_severity": "Moderate"}