ghsa-2xp4-9hmm-63gj
Vulnerability from github
Published
2024-03-04 18:30
Modified
2024-03-04 18:30
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
{
"affected": [],
"aliases": [
"CVE-2021-47090"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-04T18:15:07Z",
"severity": null
},
"details": "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",
"id": "GHSA-2xp4-9hmm-63gj",
"modified": "2024-03-04T18:30:38Z",
"published": "2024-03-04T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47090"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3"
}
],
"schema_version": "1.4.0",
"severity": []
}
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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