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CVE-2025-39883— mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory

AI Predicted 5.5 Difficulty: Hard EPSS 0.14% · P4

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxf1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< 8e01ea186a52c90694c08a9ff57bea1b0e78256aaffected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< fb65803ccff37cf9123c50c1c02efd1ed73c4ed5affected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< 99f7048957f5ae3cee1c01189147e73a9a96de02affected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< e4ec6def5643a1c9511115b3884eb879572294c6affected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< 3d278e89c2ea62b1aaa4b0d8a9766a35b3a3164aaffected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< 7618fd443aa4cfa553a64cacf5721581653ee7b0affected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< 63a327a2375a8ce7a47dec5aaa4d8a9ae0a00b96affected
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe< d613f53c83ec47089c4e25859d5e8e0359f6f8daaffected
… +10 more rows
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I. Basic Information for CVE-2025-39883

Vulnerability Information
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Vulnerability Title
mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory When I did memory failure tests, below panic occurs: page dumped because: VM_BUG_ON_PAGE(PagePoisoned(page)) kernel BUG at include/linux/page-flags.h:616! Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 720 Comm: bash Not tainted 6.10.0-rc1-00195-g148743902568 #40 RIP: 0010:unpoison_memory+0x2f3/0x590 RSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246 RAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0 RBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb R10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000 R13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe FS: 00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0 Call Trace: <TASK> unpoison_memory+0x2f3/0x590 simple_attr_write_xsigned.constprop.0.isra.0+0xb3/0x110 debugfs_attr_write+0x42/0x60 full_proxy_write+0x5b/0x80 vfs_write+0xd5/0x540 ksys_write+0x64/0xe0 do_syscall_64+0xb9/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08f0314887 RSP: 002b:00007ffece710078 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f08f0314887 RDX: 0000000000000009 RSI: 0000564787a30410 RDI: 0000000000000001 RBP: 0000564787a30410 R08: 000000000000fefe R09: 000000007fffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 R13: 00007f08f041b780 R14: 00007f08f0417600 R15: 00007f08f0416a00 </TASK> Modules linked in: hwpoison_inject ---[ end trace 0000000000000000 ]--- RIP: 0010:unpoison_memory+0x2f3/0x590 RSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246 RAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0 RBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb R10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000 R13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe FS: 00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0 Kernel panic - not syncing: Fatal exception Kernel Offset: 0x31c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Fatal exception ]--- The root cause is that unpoison_memory() tries to check the PG_HWPoison flags of an uninitialized page. So VM_BUG_ON_PAGE(PagePoisoned(page)) is triggered. This can be reproduced by below steps: 1.Offline memory block: echo offline > /sys/devices/system/memory/memory12/state 2.Get offlined memory pfn: page-types -b n -rlN 3.Write pfn to unpoison-pfn echo <pfn> > /sys/kernel/debug/hwpoison/unpoison-pfn This scenario can be identified by pfn_to_online_page() returning NULL. And ZONE_DEVICE pages are never expected, so we can simply fail if pfn_to_online_page() == NULL to fix the bug.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存取消毒处理不当，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe ~ 8e01ea186a52c90694c08a9ff57bea1b0e78256a -
LinuxLinux 4.13 -

II. Public POCs for CVE-2025-39883

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III. Intelligence Information for CVE-2025-39883

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Patches & Fixes for CVE-2025-39883 (3)

Same Patch Batch · Linux · 2025-09-23 · 21 CVEs total

CVE-2025-398809.8 CRITICALlibceph: fix invalid accesses to ceph_connection_v1_info
CVE-2025-398698.4 HIGHdmaengine: ti: edma: Fix memory allocation size for queue_priority_map
CVE-2025-398828.4 HIGHdrm/mediatek: fix potential OF node use-after-free
CVE-2025-398887.8 HIGHfuse: Block access to folio overlimit
CVE-2025-398727.8 HIGHhsr: hold rcu and dev lock for hsr_get_port_ndev
CVE-2025-398737.8 HIGHcan: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB
CVE-2025-398687.8 HIGHerofs: fix runtime warning on truncate_folio_batch_exceptionals()
CVE-2025-398817.8 HIGHkernfs: Fix UAF in polling when open file is released
CVE-2025-39879ceph: always call ceph_shift_unused_folios_left()
CVE-2025-39887tracing/osnoise: Fix null-ptr-deref in bitmap_parselist()
CVE-2025-39885ocfs2: fix recursive semaphore deadlock in fiemap call
CVE-2025-39886bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
CVE-2025-39884btrfs: fix subvolume deletion lockup caused by inodes xarray race
CVE-2025-39878ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error
CVE-2025-39877mm/damon/sysfs: fix use-after-free in state_show()
CVE-2025-39876net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
CVE-2025-39874macsec: sync features on RTM_NEWLINK
CVE-2025-39875igb: Fix NULL pointer dereference in ethtool loopback test
CVE-2025-39871dmaengine: idxd: Remove improper idxd_free
CVE-2025-39870dmaengine: idxd: Fix double free in idxd_setup_wqs()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39883

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