{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49666", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:21:30.436Z", "datePublished": "2025-02-26T02:24:01.148Z", "dateUpdated": "2026-05-23T15:22:42.733Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:22:42.733Z" }, "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\")" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/Kconfig", "arch/powerpc/mm/mem.c" ], "versions": [ { "version": "fddb88bd266f4513abab7c36bca98935c9148a98", "lessThan": "89296ac435e2cf8a5101f7fab8f0c7b754b92052", "status": "affected", "versionType": "git" }, { "version": "ffa0b64e3be58519ae472ea29a1a1ad681e32f48", "lessThan": "84d146fd35a01b08e9515041de60f0f915a417d5", "status": "affected", "versionType": "git" }, { "version": "ffa0b64e3be58519ae472ea29a1a1ad681e32f48", "lessThan": "ac790d09885d36143076e7e02825c541e8eee899", "status": "affected", "versionType": "git" }, { "version": "deab81144d5a043f42804207fb76cfbd8a806978", "status": "affected", "versionType": "git" }, { "version": "d36febbcd537fcc50284e8b89609632d0146529f", "status": "affected", "versionType": "git" }, { "version": "a3727c25eacd7e437c4f560957fa3a376fe93e6b", "status": "affected", "versionType": "git" }, { "version": "cbc065efcba000ad8f615f506ebe61b6d3c5145b", "status": "affected", "versionType": "git" }, { "version": "5.15.34", "lessThan": "5.15.53", "status": "affected", "versionType": "semver" }, { "version": "5.4.190", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "5.10.111", "lessThan": "5.11", "status": "affected", "versionType": "semver" }, { "version": "5.16.20", "lessThan": "5.17", "status": "affected", "versionType": "semver" }, { "version": "5.17.3", "lessThan": "5.18", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/Kconfig", "arch/powerpc/mm/mem.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.53", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.10", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.34", "versionEndExcluding": "5.15.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "5.18.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "5.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/89296ac435e2cf8a5101f7fab8f0c7b754b92052" }, { "url": "https://git.kernel.org/stable/c/84d146fd35a01b08e9515041de60f0f915a417d5" }, { "url": "https://git.kernel.org/stable/c/ac790d09885d36143076e7e02825c541e8eee899" } ], "title": "powerpc/memhotplug: Add add_pages override for PPC", "x_generator": { "engine": "bippy-1.2.0" } } } }