{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level\n\nThough acpi_find_last_cache_level() always returned signed value and the\ndocument states it will return any errors caused by lack of a PPTT table,\nit never returned negative values before.\n\nCommit 0c80f9e165f8 (\"ACPI: PPTT: Leave the table mapped for the runtime usage\")\nhowever changed it by returning -ENOENT if no PPTT was found. The value\nreturned from acpi_find_last_cache_level() is then assigned to unsigned\nfw_level.\n\nIt will result in the number of cache leaves calculated incorrectly as\na huge value which will then cause the following warning from __alloc_pages\nas the order would be great than MAX_ORDER because of incorrect and huge\ncache leaves value.\n\n | WARNING: CPU: 0 PID: 1 at mm/page_alloc.c:5407 __alloc_pages+0x74/0x314\n | Modules linked in:\n | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-10393-g7c2a8d3ac4c0 #73\n | pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n | pc : __alloc_pages+0x74/0x314\n | lr : alloc_pages+0xe8/0x318\n | Call trace:\n | __alloc_pages+0x74/0x314\n | alloc_pages+0xe8/0x318\n | kmalloc_order_trace+0x68/0x1dc\n | __kmalloc+0x240/0x338\n | detect_cache_attributes+0xe0/0x56c\n | update_siblings_masks+0x38/0x284\n | store_cpu_topology+0x78/0x84\n | smp_prepare_cpus+0x48/0x134\n | kernel_init_freeable+0xc4/0x14c\n | kernel_init+0x2c/0x1b4\n | ret_from_fork+0x10/0x20\n\nFix the same by changing fw_level to be signed integer and return the\nerror from init_cache_level() early in case of error.", "category":"general", "title":"Synopsis" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49964" }, { "summary":"CVE-2022-49964 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2022/csaf-openeuler-cve-2022-49964.json" }, { "summary":"openEuler-SA-2025-1820", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1820" }, { "summary":"CVE-2022-49964", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2022-49964&packageName=kernel" } ], "title":"openEuler cve CVE-2022-49964", "tracking":{ "initial_release_date":"2025-07-11T20:21:19+08:00", "revision_history":[ { "date":"2025-07-11T20:21:19+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2025-07-11T20:21:19+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2025-07-11T20:21:19+08:00", "id":"CVE-2022-49964", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4" }, "product_id":"openEuler-20.03-LTS-SP4", "name":"openEuler-20.03-LTS-SP4" }, "name":"openEuler-20.03-LTS-SP4", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4" }, 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PPTT was found. The value\nreturned from acpi_find_last_cache_level() is then assigned to unsigned\nfw_level.\n\nIt will result in the number of cache leaves calculated incorrectly as\na huge value which will then cause the following warning from __alloc_pages\nas the order would be great than MAX_ORDER because of incorrect and huge\ncache leaves value.\n\n | WARNING: CPU: 0 PID: 1 at mm/page_alloc.c:5407 __alloc_pages+0x74/0x314\n | Modules linked in:\n | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-10393-g7c2a8d3ac4c0 #73\n | pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n | pc : __alloc_pages+0x74/0x314\n | lr : alloc_pages+0xe8/0x318\n | Call trace:\n | __alloc_pages+0x74/0x314\n | alloc_pages+0xe8/0x318\n | kmalloc_order_trace+0x68/0x1dc\n | __kmalloc+0x240/0x338\n | detect_cache_attributes+0xe0/0x56c\n | update_siblings_masks+0x38/0x284\n | store_cpu_topology+0x78/0x84\n | smp_prepare_cpus+0x48/0x134\n | kernel_init_freeable+0xc4/0x14c\n | kernel_init+0x2c/0x1b4\n | ret_from_fork+0x10/0x20\n\nFix the same by changing fw_level to be signed integer and return the\nerror from init_cache_level() early in case of error.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", 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"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H", "version":"3.1" }, "products":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-devel-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:perf-4.19.90-2507.2.0.0335.oe2003sp4.aarch64", 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