CVE-2021-47090
Linux Kernel mm/hwpoison MF_COUNT_INCREASED Memory Corruption Vulnerability
Description
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
INFO
Published Date :
March 4, 2024, 6:15 p.m.
Last Modified :
Feb. 14, 2025, 2:31 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system to apply the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47090.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 | Exploit Mailing List Patch |
| https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 | Exploit Mailing List Patch |
| https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 | Exploit Mailing List Patch |
| https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 | Exploit Mailing List Patch |
| https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 | Exploit Mailing List Patch |
| https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 | Exploit Mailing List Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47090 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47090
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47090 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47090 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 14, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.89 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.12 *cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 No Types Assigned https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 Exploit, Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 No Types Assigned https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 Exploit, Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 No Types Assigned https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 Exploit, Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 No Types Assigned https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 Exploit, Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 No Types Assigned https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 Exploit, Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 No Types Assigned https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 Exploit, Mailing List, Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 Added Reference https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 Added Reference https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 04, 2024
Action Type Old Value New Value Added Description 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 Added Reference Linux https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418 [No types assigned]