CVE-2025-21907
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21907
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21907.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21907
- Downstream
- Published
- 2025-04-01T15:40:47Z
- Modified
- 2025-10-10T07:46:08.178328Z
- Summary
- mm: memory-failure: update ttu flag inside unmap_poisoned_folio
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm: memory-failure: update ttu flag inside unmappoisonedfolio
Patch series "mm: memory_failure: unmap poisoned folio during migrate properly", v3.
Fix two bugs during folio migration if the folio is poisoned.
This patch (of 3):
Commit 6da6b1d4a7df ("mm/hwpoison: convert TTUIGNOREHWPOISON to TTUHWPOISON") introduce TTUHWPOISON to replace TTUIGNOREHWPOISON in order to stop send SIGBUS signal when accessing an error page after a memory error on a clean folio. However during page migration, anon folio must be set with TTUHWPOISON during unmap*(). For pagecache we need some policy just like the one in hwpoisonusermappings to set this flag. So move this policy from hwpoisonusermappings to unmappoisonedfolio to handle this warning properly.
Warning will be produced during unamp poison folio with the following log:
------------[ cut here ]------------ WARNING: CPU: 1 PID: 365 at mm/rmap.c:1847 trytounmapone+0x8fc/0xd3c Modules linked in: CPU: 1 UID: 0 PID: 365 Comm: bash Tainted: G W 6.13.0-rc1-00018-gacdb4bbda7ab #42 Tainted: [W]=WARN Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : trytounmapone+0x8fc/0xd3c lr : trytounmapone+0x3dc/0xd3c Call trace: trytounmapone+0x8fc/0xd3c (P) trytounmapone+0x3dc/0xd3c (L) rmapwalkanon+0xdc/0x1f8 rmapwalk+0x3c/0x58 trytounmap+0x88/0x90 unmappoisonedfolio+0x30/0xa8 domigraterange+0x4a0/0x568 offlinepages+0x5a4/0x670 memoryblockaction+0x17c/0x374 memorysubsysoffline+0x3c/0x78 deviceoffline+0xa4/0xd0 statestore+0x8c/0xf0 devattrstore+0x18/0x2c sysfskfwrite+0x44/0x54 kernfsfopwriteiter+0x118/0x1a8 vfswrite+0x3a8/0x4bc ksyswrite+0x6c/0xf8 _arm64syswrite+0x1c/0x28 invokesyscall+0x44/0x100 el0svccommon.constprop.0+0x40/0xe0 doel0svc+0x1c/0x28 el0svc+0x30/0xd0 el0t64synchandler+0xc8/0xcc el0t64sync+0x198/0x19c ---[ end trace 0000000000000000 ]---
[mawupeng1@huawei.com: unmappoisonedfolio(): remove shadowed local `mapping', per Miaohe]
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6da6b1d4a7df8c35770186b53ef65d388398e139Fixed608cc7deb428f1122ed426060233622ebf667b6e
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6da6b1d4a7df8c35770186b53ef65d388398e139Fixed425c12c076e6fc6b2cb04b9f960319d31dcabc76
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6da6b1d4a7df8c35770186b53ef65d388398e139Fixedb81679b1633aa43c0d973adfa816d78c1ed0d032
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddeab8114fb67dcb0e6293b665c3c7083fbadff17
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6dcf132fe236045bd7f50c008660ea086d09af1f
Affected versions
v4.*
v4.19.1
v4.19.10
v4.19.11
v4.19.12
v4.19.13
v4.19.14
v4.19.15
v4.19.16
v4.19.17
v4.19.18
v4.19.19
v4.19.2
v4.19.20
v4.19.21
v4.19.22
v4.19.23
v4.19.24
v4.19.25
v4.19.26
v4.19.27
v4.19.28
v4.19.29
v4.19.3
v4.19.30
v4.19.31
v4.19.32
v4.19.33
v4.19.34
v4.19.35
v4.19.36
v4.19.37
v4.19.38
v4.19.39
v4.19.4
v4.19.40
v4.19.41
v4.19.42
v4.19.43
v4.19.44
v4.19.45
v4.19.46
v4.19.47
v4.19.48
v4.19.49
v4.19.5
v4.19.50
v4.19.51
v4.19.52
v4.19.53
v4.19.54
v4.19.55
v4.19.56
v4.19.57
v4.19.58
v4.19.59
v4.19.6
v4.19.60
v4.19.61
v4.19.62
v4.19.63
v4.19.64
v4.19.65
v4.19.66
v4.19.67
v4.19.68
v4.19.69
v4.19.7
v4.19.70
v4.19.71
v4.19.72
v4.19.73
v4.19.74
v4.19.75
v4.19.76
v4.19.77
v4.19.78
v4.19.79
v4.19.8
v4.19.80
v4.19.81
v4.19.82
v4.19.83
v4.19.84
v4.19.85
v4.19.86
v4.19.87
v4.19.88
v4.19.89
v4.19.9
v5.*
v5.10.1
v5.10.10
v5.10.11
v5.10.12
v5.10.13
v5.10.14
v5.10.15
v5.10.16
v5.10.17
v5.10.18
v5.10.19
v5.10.2
v5.10.20
v5.10.21
v5.10.22
v5.10.23
v5.10.24
v5.10.25
v5.10.26
v5.10.27
v5.10.28
v5.10.29
v5.10.3
v5.10.30
v5.10.31
v5.10.32
v5.10.33
v5.10.34
v5.10.35
v5.10.36
v5.10.37
v5.10.38
v5.10.39
v5.10.4
v5.10.40
v5.10.41
v5.10.42
v5.10.43
v5.10.44
v5.10.45
v5.10.46
v5.10.47
v5.10.48
v5.10.49
v5.10.5
v5.10.50
v5.10.51
v5.10.52
v5.10.53
v5.10.54
v5.10.55
v5.10.56
v5.10.57
v5.10.58
v5.10.59
v5.10.6
v5.10.60
v5.10.61
v5.10.62
v5.10.63
v5.10.64
v5.10.65
v5.10.66
v5.10.67
v5.10.68
v5.10.69
v5.10.7
v5.10.70
v5.10.71
v5.10.72
v5.10.73
v5.10.74
v5.10.75
v5.10.76
v5.10.77
v5.10.78
v5.10.79
v5.10.8
v5.10.80
v5.10.9
v5.11.1
v5.11.10
v5.11.11
v5.11.12
v5.11.13
v5.11.14
v5.11.15
v5.11.16
v5.11.17
v5.11.18
v5.11.19
v5.11.2
v5.11.20
v5.11.21
v5.11.3
v5.11.4
v5.11.5
v5.11.6
v5.11.7
v5.11.8
v5.11.9
v5.12.1
v5.12.10
v5.12.11
v5.12.12
v5.12.13
v5.12.14
v5.12.15
v5.12.16
v5.12.17
v5.12.18
v5.12.19
v5.12.2
v5.12.3
v5.12.4
v5.12.5
v5.12.6
v5.12.7
v5.12.8
v5.12.9
v5.13.1
v5.13.10
v5.13.11
v5.13.12
v5.13.13
v5.13.14
v5.13.15
v5.13.16
v5.13.17
v5.13.18
v5.13.2
v5.13.3
v5.13.4
v5.13.5
v5.13.6
v5.13.7
v5.13.8
v5.13.9
v5.14.1
v5.14.10
v5.14.11
v5.14.12
v5.14.13
v5.14.14
v5.14.15
v5.14.16
v5.14.17
v5.14.18
v5.14.19
v5.14.2
v5.14.20
v5.14.3
v5.14.4
v5.14.5
v5.14.6
v5.14.7
v5.14.8
v5.14.9
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.24
v5.15.25
v5.15.26
v5.15.27
v5.15.28
v5.15.29
v5.15.3
v5.15.30
v5.15.31
v5.15.32
v5.15.33
v5.15.34
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.4
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.5
v5.15.50
v5.15.51
v5.15.52
v5.15.53
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.6
v5.15.60
v5.15.61
v5.15.62
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.7
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.8
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.9
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.16.1
v5.16.10
v5.16.11
v5.16.12
v5.16.13
v5.16.14
v5.16.15
v5.16.16
v5.16.17
v5.16.18
v5.16.19
v5.16.2
v5.16.20
v5.16.3
v5.16.4
v5.16.5
v5.16.6
v5.16.7
v5.16.8
v5.16.9
v5.17.1
v5.17.10
v5.17.11
v5.17.12
v5.17.13
v5.17.14
v5.17.2
v5.17.3
v5.17.4
v5.17.5
v5.17.6
v5.17.7
v5.17.8
v5.17.9
v5.18.1
v5.18.10
v5.18.11
v5.18.12
v5.18.13
v5.18.14
v5.18.15
v5.18.16
v5.18.17
v5.18.18
v5.18.19
v5.18.2
v5.18.3
v5.18.4
v5.18.5
v5.18.6
v5.18.7
v5.18.8
v5.18.9
v5.19.1
v5.19.10
v5.19.11
v5.19.12
v5.19.13
v5.19.14
v5.19.15
v5.19.16
v5.19.2
v5.19.3
v5.19.4
v5.19.5
v5.19.6
v5.19.7
v5.19.8
v5.19.9
v5.4.1
v5.4.10
v5.4.11
v5.4.12
v5.4.13
v5.4.14
v5.4.15
v5.4.16
v5.4.17
v5.4.18
v5.4.19
v5.4.2
v5.4.20
v5.4.21
v5.4.22
v5.4.23
v5.4.24
v5.4.25
v5.4.26
v5.4.27
v5.4.28
v5.4.29
v5.4.3
v5.4.30
v5.4.31
v5.4.32
v5.4.33
v5.4.34
v5.4.35
v5.4.36
v5.4.37
v5.4.38
v5.4.39
v5.4.4
v5.4.40
v5.4.41
v5.4.42
v5.4.43
v5.4.44
v5.4.45
v5.4.46
v5.4.47
v5.4.48
v5.4.49
v5.4.5
v5.4.50
v5.4.51
v5.4.52
v5.4.53
v5.4.54
v5.4.55
v5.4.56
v5.4.57
v5.4.58
v5.4.59
v5.4.6
v5.4.60
v5.4.61
v5.4.62
v5.4.63
v5.4.64
v5.4.65
v5.4.66
v5.4.67
v5.4.68
v5.4.69
v5.4.7
v5.4.70
v5.4.71
v5.4.72
v5.4.73
v5.4.74
v5.4.75
v5.4.76
v5.4.77
v5.4.78
v5.4.79
v5.4.8
v5.4.80
v5.4.81
v5.4.82
v5.4.83
v5.4.84
v5.4.85
v5.4.9
v5.6.1
v5.6.10
v5.6.11
v5.6.12
v5.6.13
v5.6.14
v5.6.15
v5.6.16
v5.6.17
v5.6.18
v5.6.2
v5.6.3
v5.6.4
v5.6.5
v5.6.6
v5.6.7
v5.6.8
v5.6.9
v5.7.1
v5.7.10
v5.7.11
v5.7.12
v5.7.13
v5.7.14
v5.7.15
v5.7.16
v5.7.2
v5.7.3
v5.7.4
v5.7.5
v5.7.6
v5.7.7
v5.7.8
v5.7.9
v5.8.1
v5.8.10
v5.8.11
v5.8.12
v5.8.13
v5.8.14
v5.8.15
v5.8.16
v5.8.17
v5.8.18
v5.8.2
v5.8.3
v5.8.4
v5.8.5
v5.8.6
v5.8.7
v5.8.8
v5.8.9
v5.9.1
v5.9.10
v5.9.11
v5.9.12
v5.9.13
v5.9.14
v5.9.15
v5.9.16
v5.9.2
v5.9.3
v5.9.4
v5.9.5
v5.9.6
v5.9.7
v5.9.8
v5.9.9
v6.*
v6.0.1
v6.0.10
v6.0.11
v6.0.12
v6.0.13
v6.0.14
v6.0.15
v6.0.16
v6.0.17
v6.0.18
v6.0.2
v6.0.3
v6.0.4
v6.0.5
v6.0.6
v6.0.7
v6.0.8
v6.0.9
v6.1.1
v6.1.10
v6.1.100
v6.1.101
v6.1.102
v6.1.103
v6.1.104
v6.1.105
v6.1.106
v6.1.107
v6.1.108
v6.1.109
v6.1.11
v6.1.110
v6.1.111
v6.1.112
v6.1.113
v6.1.114
v6.1.115
v6.1.116
v6.1.117
v6.1.118
v6.1.119
v6.1.12
v6.1.120
v6.1.121
v6.1.122
v6.1.123
v6.1.124
v6.1.125
v6.1.126
v6.1.127
v6.1.128
v6.1.129
v6.1.13
v6.1.130
v6.1.131
v6.1.132
v6.1.133
v6.1.134
v6.1.135
v6.1.136
v6.1.137
v6.1.138
v6.1.139
v6.1.14
v6.1.140
v6.1.141
v6.1.142
v6.1.143
v6.1.144
v6.1.145
v6.1.146
v6.1.147
v6.1.148
v6.1.149
v6.1.15
v6.1.150
v6.1.151
v6.1.152
v6.1.153
v6.1.154
v6.1.155
v6.1.16
v6.1.17
v6.1.18
v6.1.19
v6.1.2
v6.1.20
v6.1.21
v6.1.22
v6.1.23
v6.1.24
v6.1.25
v6.1.26
v6.1.27
v6.1.28
v6.1.29
v6.1.3
v6.1.30
v6.1.31
v6.1.32
v6.1.33
v6.1.34
v6.1.35
v6.1.36
v6.1.37
v6.1.38
v6.1.39
v6.1.4
v6.1.40
v6.1.41
v6.1.42
v6.1.43
v6.1.44
v6.1.45
v6.1.46
v6.1.47
v6.1.48
v6.1.49
v6.1.5
v6.1.50
v6.1.51
v6.1.52
v6.1.53
v6.1.54
v6.1.55
v6.1.56
v6.1.57
v6.1.58
v6.1.59
v6.1.6
v6.1.60
v6.1.61
v6.1.62
v6.1.63
v6.1.64
v6.1.65
v6.1.66
v6.1.67
v6.1.68
v6.1.69
v6.1.7
v6.1.70
v6.1.71
v6.1.72
v6.1.73
v6.1.74
v6.1.75
v6.1.76
v6.1.77
v6.1.78
v6.1.79
v6.1.8
v6.1.80
v6.1.81
v6.1.82
v6.1.83
v6.1.84
v6.1.85
v6.1.86
v6.1.87
v6.1.88
v6.1.89
v6.1.9
v6.1.90
v6.1.91
v6.1.92
v6.1.93
v6.1.94
v6.1.95
v6.1.96
v6.1.97
v6.1.98
v6.1.99
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.10.1
v6.10.10
v6.10.11
v6.10.12
v6.10.13
v6.10.2
v6.10.3
v6.10.4
v6.10.5
v6.10.6
v6.10.7
v6.10.8
v6.10.9
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.11.1
v6.11.10
v6.11.11
v6.11.2
v6.11.3
v6.11.4
v6.11.5
v6.11.6
v6.11.7
v6.11.8
v6.11.9
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.23
v6.12.24
v6.12.25
v6.12.26
v6.12.27
v6.12.28
v6.12.29
v6.12.3
v6.12.30
v6.12.31
v6.12.32
v6.12.33
v6.12.34
v6.12.35
v6.12.36
v6.12.37
v6.12.38
v6.12.39
v6.12.4
v6.12.40
v6.12.41
v6.12.42
v6.12.43
v6.12.44
v6.12.45
v6.12.46
v6.12.47
v6.12.48
v6.12.49
v6.12.5
v6.12.50
v6.12.51
v6.12.6
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