{ "id": "CVE-2022-48755", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2024-06-20T12:15:13.653", "lastModified": "2025-01-06T21:44:42.290", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06\n\nJohan reported the below crash with test_bpf on ppc64 e5500:\n\n test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1\n Oops: Exception in kernel mode, sig: 4 [#1]\n BE PAGE_SIZE=4K SMP NR_CPUS=24 QEMU e500\n Modules linked in: test_bpf(+)\n CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0-03771-g98c2059e008a-dirty #1\n NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18\n REGS: c0000000032d3420 TRAP: 0700 Not tainted (5.14.0-03771-g98c2059e008a-dirty)\n MSR: 0000000080089000 CR: 88002822 XER: 20000000 IRQMASK: 0\n <...>\n NIP [8000000000061c3c] 0x8000000000061c3c\n LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf]\n Call Trace:\n .__run_one+0x60/0x17c [test_bpf] (unreliable)\n .test_bpf_init+0x6a8/0xdc8 [test_bpf]\n .do_one_initcall+0x6c/0x28c\n .do_init_module+0x68/0x28c\n .load_module+0x2460/0x2abc\n .__do_sys_init_module+0x120/0x18c\n .system_call_exception+0x110/0x1b8\n system_call_common+0xf0/0x210\n --- interrupt: c00 at 0x101d0acc\n <...>\n ---[ end trace 47b2bf19090bb3d0 ]---\n\n Illegal instruction\n\nThe illegal instruction turned out to be 'ldbrx' emitted for\nBPF_FROM_[L|B]E, which was only introduced in ISA v2.06. Guard use of\nthe same and implement an alternative approach for older processors." }, { "lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: powerpc64/bpf: Limite 'ldbrx' a procesadores compatibles con ISA v2.06 Johan inform\u00f3 el siguiente fallo con test_bpf en ppc64 e5500: test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1 Ups: Excepci\u00f3n en modo kernel, sign: 4 [#1] BE PAGE_SIZE=4K SMP NR_CPUS=24 M\u00f3dulos QEMU e500 vinculados en: test_bpf(+) CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0- 03771-g98c2059e008a-dirty #1 NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18 REGS: c0000000032d3420 TRAP: 0700 No contaminado (5.14.0-0 3771-g98c2059e008a-dirty) MSR: 0000000080089000 CR: 88002822 XER: 20000000 IRQMASK : 0 <...> NIP [8000000000061c3c] 0x8000000000061c3c LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf] Seguimiento de llamadas: .__run_one+0x60/0x17c [test_bpf] (no confiable). test_bpf_init+0x6a8/0xdc8 [test_bpf] . do_one_initcall+0x6c/0x28c .do_init_module+0x68/0x28c .load_module+0x2460/0x2abc .__do_sys_init_module+0x120/0x18c .system_call_exception+0x110/0x1b8 system_call_common+0xf0/0x210 --- interrupci\u00f3n : c00 en 0x101d0acc <...> --- [ end trace 47b2bf19090bb3d0 ]--- Instrucci\u00f3n ilegal La instrucci\u00f3n ilegal result\u00f3 ser 'ldbrx' emitida para BPF_FROM_[L|B]E, que solo se introdujo en ISA v2.06. Proteger el uso de los mismos e implementar un enfoque alternativo para procesadores m\u00e1s antiguos." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.96", "matchCriteriaId": "60F53B84-60D9-4B4C-ABF2-EBB451BF7D86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.19", "matchCriteriaId": "DF69DD7C-FD57-4914-ABB0-FAEF87B0289D" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "5.16.5", "matchCriteriaId": "1AD9E77E-B27E-450C-8FD8-B64EC5FB002D" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] } ] }