{"id":"CVE-2021-47090","state":"PUBLISHED","title":"mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()\n\nHulk Robot reported a panic in put_page_testzero() when testing\nmadvise() with MADV_SOFT_OFFLINE.  The BUG() is triggered when retrying\nget_any_page().  This is because we keep MF_COUNT_INCREASED flag in\nsecond try but the refcnt is not increased.\n\n    page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)\n    ------------[ cut here ]------------\n    kernel BUG at include/linux/mm.h:737!\n    invalid opcode: 0000 [#1] PREEMPT SMP\n    CPU: 5 PID: 2135 Comm: sshd Tainted: G    B             5.16.0-rc6-dirty #373\n    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\n    RIP: release_pages+0x53f/0x840\n    Call Trace:\n      free_pages_and_swap_cache+0x64/0x80\n      tlb_flush_mmu+0x6f/0x220\n      unmap_page_range+0xe6c/0x12c0\n      unmap_single_vma+0x90/0x170\n      unmap_vmas+0xc4/0x180\n      exit_mmap+0xde/0x3a0\n      mmput+0xa3/0x250\n      do_exit+0x564/0x1470\n      do_group_exit+0x3b/0x100\n      __do_sys_exit_group+0x13/0x20\n      __x64_sys_exit_group+0x16/0x20\n      do_syscall_64+0x34/0x80\n      entry_SYSCALL_64_after_hwframe+0x44/0xae\n    Modules linked in:\n    ---[ end trace e99579b570fe0649 ]---\n    RIP: 0010:release_pages+0x53f/0x840","publishedAt":"2024-03-04T18:10:28.887Z","updatedAt":"2026-05-11T13:47:51.088Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"1f207076740101fed87074a6bc924dbe806f08a5","versionType":"git"},{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"c691e7575eff76e563b0199c23ec46bd454f43e3","versionType":"git"},{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"2a57d83c78f889bf3f54eede908d0643c40d5418","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/memory-failure.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.89","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/memory-failure.c"]}],"references":["https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5","https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3","https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47090.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47090","state":"PUBLISHED","datePublished":"2024-03-04T18:10:28.887Z","dateUpdated":"2026-05-11T13:47:51.088Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-29T22:33:44.300Z"},"containers":{"cna":{"title":"mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()\n\nHulk Robot reported a panic in put_page_testzero() when testing\nmadvise() with MADV_SOFT_OFFLINE.  The BUG() is triggered when retrying\nget_any_page().  This is because we keep MF_COUNT_INCREASED flag in\nsecond try but the refcnt is not increased.\n\n    page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)\n    ------------[ cut here ]------------\n    kernel BUG at include/linux/mm.h:737!\n    invalid opcode: 0000 [#1] PREEMPT SMP\n    CPU: 5 PID: 2135 Comm: sshd Tainted: G    B             5.16.0-rc6-dirty #373\n    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\n    RIP: release_pages+0x53f/0x840\n    Call Trace:\n      free_pages_and_swap_cache+0x64/0x80\n      tlb_flush_mmu+0x6f/0x220\n      unmap_page_range+0xe6c/0x12c0\n      unmap_single_vma+0x90/0x170\n      unmap_vmas+0xc4/0x180\n      exit_mmap+0xde/0x3a0\n      mmput+0xa3/0x250\n      do_exit+0x564/0x1470\n      do_group_exit+0x3b/0x100\n      __do_sys_exit_group+0x13/0x20\n      __x64_sys_exit_group+0x16/0x20\n      do_syscall_64+0x34/0x80\n      entry_SYSCALL_64_after_hwframe+0x44/0xae\n    Modules linked in:\n    ---[ end trace e99579b570fe0649 ]---\n    RIP: 0010:release_pages+0x53f/0x840"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"1f207076740101fed87074a6bc924dbe806f08a5","versionType":"git"},{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"c691e7575eff76e563b0199c23ec46bd454f43e3","versionType":"git"},{"version":"b94e02822debdf0cc473556aad7dcc859f216653","status":"affected","lessThan":"2a57d83c78f889bf3f54eede908d0643c40d5418","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/memory-failure.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.89","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/memory-failure.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5"},{"url":"https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3"},{"url":"https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:47:51.088Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.89"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-06-26T20:39:00.892083Z","id":"CVE-2021-47090","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-26T20:40:06.570Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:24:39.860Z"}}]}}}