CVE-2022-49666

{"id": "CVE-2022-49666", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:41.600", "references": [{"url": "https://git.kernel.org/stable/c/84d146fd35a01b08e9515041de60f0f915a417d5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/89296ac435e2cf8a5101f7fab8f0c7b754b92052", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ac790d09885d36143076e7e02825c541e8eee899", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/memhotplug: Add add_pages override for PPC\n\nWith commit ffa0b64e3be5 (\"powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit\")\nthe kernel now validate the addr against high_memory value. This results\nin the below BUG_ON with dax pfns.\n\n[ 635.798741][T26531] kernel BUG at mm/page_alloc.c:5521!\n1:mon> e\ncpu 0x1: Vector: 700 (Program Check) at [c000000007287630]\n pc: c00000000055ed48: free_pages.part.0+0x48/0x110\n lr: c00000000053ca70: tlb_finish_mmu+0x80/0xd0\n sp: c0000000072878d0\n msr: 800000000282b033\n current = 0xc00000000afabe00\n paca = 0xc00000037ffff300 irqmask: 0x03 irq_happened: 0x05\n pid = 26531, comm = 50-landscape-sy\nkernel BUG at :5521!\nLinux version 5.19.0-rc3-14659-g4ec05be7c2e1 (kvaneesh@ltc-boston8) (gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #625 SMP Thu Jun 23 00:35:43 CDT 2022\n1:mon> t\n[link register ] c00000000053ca70 tlb_finish_mmu+0x80/0xd0\n[c0000000072878d0] c00000000053ca54 tlb_finish_mmu+0x64/0xd0 (unreliable)\n[c000000007287900] c000000000539424 exit_mmap+0xe4/0x2a0\n[c0000000072879e0] c00000000019fc1c mmput+0xcc/0x210\n[c000000007287a20] c000000000629230 begin_new_exec+0x5e0/0xf40\n[c000000007287ae0] c00000000070b3cc load_elf_binary+0x3ac/0x1e00\n[c000000007287c10] c000000000627af0 bprm_execve+0x3b0/0xaf0\n[c000000007287cd0] c000000000628414 do_execveat_common.isra.0+0x1e4/0x310\n[c000000007287d80] c00000000062858c sys_execve+0x4c/0x60\n[c000000007287db0] c00000000002c1b0 system_call_exception+0x160/0x2c0\n[c000000007287e10] c00000000000c53c system_call_common+0xec/0x250\n\nThe fix is to make sure we update high_memory on memory hotplug.\nThis is similar to what x86 does in commit 3072e413e305 (\"mm/memory_hotplug: introduce add_pages\")"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/memhotplug: Add add_pages override for PPC With commit ffa0b64e3be5 (\"powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit\") the kernel now validate the addr against high_memory value. This results in the below BUG_ON with dax pfns. [ 635.798741][T26531] kernel BUG at mm/page_alloc.c:5521! 1:mon> e cpu 0x1: Vector: 700 (Program Check) at [c000000007287630] pc: c00000000055ed48: free_pages.part.0+0x48/0x110 lr: c00000000053ca70: tlb_finish_mmu+0x80/0xd0 sp: c0000000072878d0 msr: 800000000282b033 current = 0xc00000000afabe00 paca = 0xc00000037ffff300 irqmask: 0x03 irq_happened: 0x05 pid = 26531, comm = 50-landscape-sy kernel BUG at :5521! Linux version 5.19.0-rc3-14659-g4ec05be7c2e1 (kvaneesh@ltc-boston8) (gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #625 SMP Thu Jun 23 00:35:43 CDT 2022 1:mon> t [link register ] c00000000053ca70 tlb_finish_mmu+0x80/0xd0 [c0000000072878d0] c00000000053ca54 tlb_finish_mmu+0x64/0xd0 (unreliable) [c000000007287900] c000000000539424 exit_mmap+0xe4/0x2a0 [c0000000072879e0] c00000000019fc1c mmput+0xcc/0x210 [c000000007287a20] c000000000629230 begin_new_exec+0x5e0/0xf40 [c000000007287ae0] c00000000070b3cc load_elf_binary+0x3ac/0x1e00 [c000000007287c10] c000000000627af0 bprm_execve+0x3b0/0xaf0 [c000000007287cd0] c000000000628414 do_execveat_common.isra.0+0x1e4/0x310 [c000000007287d80] c00000000062858c sys_execve+0x4c/0x60 [c000000007287db0] c00000000002c1b0 system_call_exception+0x160/0x2c0 [c000000007287e10] c00000000000c53c system_call_common+0xec/0x250 The fix is to make sure we update high_memory on memory hotplug. This is similar to what x86 does in commit 3072e413e305 (\"mm/memory_hotplug: introduce add_pages\") "}], "lastModified": "2025-10-23T16:13:56.807", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38031C07-F0BC-442A-A08F-FB9B732F2CA5", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.190"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C35524B2-8E09-4BDE-B7AD-A957635B13DD", "versionEndExcluding": "5.11", "versionStartIncluding": "5.10.111"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D42BE58F-58A2-496A-927E-AFC735EC3FA1", "versionEndExcluding": "5.15.53", "versionStartIncluding": "5.15.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0854057A-1882-4E17-8A6D-E294867B22EE", "versionEndExcluding": "5.17", "versionStartIncluding": "5.16.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8771EE7-7703-460B-ABE5-ACA38B3F4E3D", "versionEndExcluding": "5.18", "versionStartIncluding": "5.17.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5328A76D-AEF6-4EFE-BEA4-B2B2E20E5A93", "versionEndExcluding": "5.18.10", "versionStartIncluding": "5.18.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0384FA0A-DE99-48D7-84E3-46ED0C3B5E03"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AB06DDF-3C2B-416D-B448-E990D8FF67A9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EAE6C6C5-4D21-4C04-897C-70CBBB3D7B91"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA5F085D-52F3-4EE2-8353-455D1A6FE073"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6EE5B78-0D83-4715-893C-ABD69B49E7FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EE723F14-047B-4FCF-B109-E0542EDFB063"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2FCFCE58-5118-4D05-864E-C82CF20EABE5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF8547FC-C849-4F1B-804B-A93AE2F04A92"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F3068028-F453-4A1C-B80F-3F5609ACEF60"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2E9C0DB0-D349-489F-A3D6-B77214E93A8A"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}