CVE-2021-47090
- Source
- https://cve.org/CVERecord?id=CVE-2021-47090
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47090.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47090
- Downstream
- Published
- 2024-03-04T18:15:07Z
- Modified
- 2026-03-15T22:42:47Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
Hulk Robot reported a panic in put_page_testzero() when testing madvise() with MADV_SOFT_OFFLINE. The BUG() is triggered when retrying get_any_page(). This is because we keep MF_COUNT_INCREASED flag in second try but the refcnt is not increased.
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0) ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:737! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 5 PID: 2135 Comm: sshd Tainted: G B 5.16.0-rc6-dirty #373 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: release_pages+0x53f/0x840 Call Trace: free_pages_and_swap_cache+0x64/0x80 tlb_flush_mmu+0x6f/0x220 unmap_page_range+0xe6c/0x12c0 unmap_single_vma+0x90/0x170 unmap_vmas+0xc4/0x180 exit_mmap+0xde/0x3a0 mmput+0xa3/0x250 do_exit+0x564/0x1470 do_group_exit+0x3b/0x100 __do_sys_exit_group+0x13/0x20 __x64_sys_exit_group+0x16/0x20 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae Modules linked in: ---[ end trace e99579b570fe0649 ]--- RIP: 0010:release_pages+0x53f/0x840 - References
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47090.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "5.10"
},
{
"fixed": "5.10.89"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.15.12"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.16-rc6"
}
]
}
]