CVE-2026-53343
- Source
- https://cve.org/CVERecord?id=CVE-2026-53343
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53343.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53343
- Downstream
- Published
- 2026-07-01T13:32:23.979Z
- Modified
- 2026-07-25T03:56:20.058777565Z
- Summary
- ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
Commit 44e9a3bb76e5 ("ARM: 9430/1: entry: Do a dummy read from VMAP shadow") added a dummy read from the KASAN VMAP stack shadow in _switchto(). The read uses ldr, but the KASAN shadow address is byte-granular and is not guaranteed to be word aligned.
ARMv5 faults unaligned word loads. With CONFIGKASANVMALLOC and CONFIGVMAPSTACK enabled, ARM926/VersatilePB crashes in _switchto() with an alignment exception before reaching init.
Use ldrb for the dummy shadow access. The code only needs to fault in the shadow mapping if the stack shadow is missing, so a byte load is sufficient and matches the granularity of KASAN shadow memory.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53343.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/2a4dc9a0ac3326e79fb58fdaae724b92127709a9
- https://git.kernel.org/stable/c/517720913bd3c17a52cd55a740064f68455ab88e
- https://git.kernel.org/stable/c/77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6
- https://git.kernel.org/stable/c/c0b8c148a7754826156993ed6442d31536ec86b4
- https://git.kernel.org/stable/c/c2e3aadc8fef7da068490597fc5582f8f362aeb2
- https://git.kernel.org/stable/c/c74990828d3c486ee44aaa68240eb3abff289d1c
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53343.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53343
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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
-
Introduced8fe148d39c127de3fb78dfa6da95a3608dfda454Fixedc0b8c148a7754826156993ed6442d31536ec86b4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedef21187c0672a2b2cbec44f33bab9ec47d5c277cFixedc2e3aadc8fef7da068490597fc5582f8f362aeb2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc86d26b4b089ca294b3b7d915a7da61edb77935fFixedc74990828d3c486ee44aaa68240eb3abff289d1c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2Fixed517720913bd3c17a52cd55a740064f68455ab88eFixed2a4dc9a0ac3326e79fb58fdaae724b92127709a9Fixed77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.120Fixed6.1.176
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.64Fixed6.6.143
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.4Fixed6.12.94
Affected versions
v6.*
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
v6.1.130
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
v6.1.140
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
v6.1.150
v6.1.151
v6.1.152
v6.1.153
v6.1.154
v6.1.155
v6.1.156
v6.1.157
v6.1.158
v6.1.159
v6.1.160
v6.1.161
v6.1.162
v6.1.163
v6.1.164
v6.1.165
v6.1.166
v6.1.167
v6.1.168
v6.1.169
v6.1.170
v6.1.171
v6.1.172
v6.1.173
v6.1.174
v6.1.175
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
v6.12.20
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
v6.12.30
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
v6.12.52
v6.12.53
v6.12.54
v6.12.55
v6.12.56
v6.12.57
v6.12.58
v6.12.59
v6.12.6
v6.12.60
v6.12.61
v6.12.62
v6.12.63
v6.12.64
v6.12.65
v6.12.66
v6.12.67
v6.12.68
v6.12.69
v6.12.7
v6.12.70
v6.12.71
v6.12.72
v6.12.73
v6.12.74
v6.12.75
v6.12.76
v6.12.77
v6.12.78
v6.12.79
v6.12.8
v6.12.80
v6.12.81
v6.12.82
v6.12.83
v6.12.84
v6.12.85
v6.12.86
v6.12.87
v6.12.88
v6.12.89
v6.12.9
v6.12.90
v6.12.91
v6.12.92
v6.12.93
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.105
v6.6.106
v6.6.107
v6.6.108
v6.6.109
v6.6.110
v6.6.111
v6.6.112
v6.6.113
v6.6.114
v6.6.115
v6.6.116
v6.6.117
v6.6.118
v6.6.119
v6.6.120
v6.6.121
v6.6.122
v6.6.123
v6.6.124
v6.6.125
v6.6.126
v6.6.127
v6.6.128
v6.6.129
v6.6.130
v6.6.131
v6.6.132
v6.6.133
v6.6.134
v6.6.135
v6.6.136
v6.6.137
v6.6.138
v6.6.139
v6.6.140
v6.6.141
v6.6.142
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.6.99
Linux / Kernel
Package
- Name
- Kernel