CVE-2023-53726
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53726
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53726.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-53726
- Downstream
- Published
- 2025-10-22T13:23:55Z
- Modified
- 2025-10-22T21:59:01.531129Z
- Summary
- arm64: csum: Fix OoB access in IP checksum code for negative lengths
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
arm64: csum: Fix OoB access in IP checksum code for negative lengths
Although commit c2c24edb1d9c ("arm64: csum: Fix pathological zero-length calls") added an early return for zero-length input, syzkaller has popped up with an example of a negative length which causes an undefined shift and an out-of-bounds read:
| BUG: KASAN: slab-out-of-bounds in docsum+0x44/0x254 arch/arm64/lib/csum.c:39 | Read of size 4294966928 at addr ffff0000d7ac0170 by task syz-executor412/5975 | | CPU: 0 PID: 5975 Comm: syz-executor412 Not tainted 6.4.0-rc4-syzkaller-g908f31f2a05b #0 | Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 | Call trace: | dumpbacktrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 | showstack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 | _dumpstack lib/dumpstack.c:88 [inline] | dumpstacklvl+0xd0/0x124 lib/dumpstack.c:106 | printaddressdescription mm/kasan/report.c:351 [inline] | printreport+0x174/0x514 mm/kasan/report.c:462 | kasanreport+0xd4/0x130 mm/kasan/report.c:572 | kasancheckrange+0x264/0x2a4 mm/kasan/generic.c:187 | _kasancheckread+0x20/0x30 mm/kasan/shadow.c:31 | docsum+0x44/0x254 arch/arm64/lib/csum.c:39 | csumpartial+0x30/0x58 lib/checksum.c:128 | gsomakechecksum include/linux/skbuff.h:4928 [inline] | _udpgsosegment+0xaf4/0x1bc4 net/ipv4/udpoffload.c:332 | udp6ufofragment+0x540/0xca0 net/ipv6/udpoffload.c:47 | ipv6gsosegment+0x5cc/0x1760 net/ipv6/ip6offload.c:119 | skbmacgsosegment+0x2b4/0x5b0 net/core/gro.c:141 | _skbgsosegment+0x250/0x3d0 net/core/dev.c:3401 | skbgsosegment include/linux/netdevice.h:4859 [inline] | validatexmitskb+0x364/0xdbc net/core/dev.c:3659 | validatexmitskblist+0x94/0x130 net/core/dev.c:3709 | schdirectxmit+0xe8/0x548 net/sched/schgeneric.c:327 | _devxmitskb net/core/dev.c:3805 [inline] | _devqueuexmit+0x147c/0x3318 net/core/dev.c:4210 | devqueuexmit include/linux/netdevice.h:3085 [inline] | packetxmit+0x6c/0x318 net/packet/afpacket.c:276 | packetsnd net/packet/afpacket.c:3081 [inline] | packetsendmsg+0x376c/0x4c98 net/packet/afpacket.c:3113 | socksendmsgnosec net/socket.c:724 [inline] | socksendmsg net/socket.c:747 [inline] | _sys_sendto+0x3b4/0x538 net/socket.c:2144
Extend the early return to reject negative lengths as well, aligning our implementation with the generic code in lib/checksum.c
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/5a85727239a23de1cc8d93985f1056308128f3e2
- https://git.kernel.org/stable/c/8bd795fedb8450ecbef18eeadbd23ed8fc7630f5
- https://git.kernel.org/stable/c/9a43563cfd6b9200ff2f76b3f9fcdcb217ceb523
- https://git.kernel.org/stable/c/a5ad2f87d8e74e351d3f500ad9d5b3a5653e1c6f
- https://git.kernel.org/stable/c/ba0b46166b8e547024d02345a68b747841931ad2
- https://git.kernel.org/stable/c/fcdf904e866de0e3715835e50409fda3b2590527
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
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixed5a85727239a23de1cc8d93985f1056308128f3e2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixed9a43563cfd6b9200ff2f76b3f9fcdcb217ceb523
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixedba0b46166b8e547024d02345a68b747841931ad2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixeda5ad2f87d8e74e351d3f500ad9d5b3a5653e1c6f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixedfcdf904e866de0e3715835e50409fda3b2590527
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5777eaed566a1d63e344d3dd8f2b5e33be20643eFixed8bd795fedb8450ecbef18eeadbd23ed8fc7630f5
Affected versions
v5.*
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.10.1
v5.10.10
v5.10.100
v5.10.101
v5.10.102
v5.10.103
v5.10.104
v5.10.105
v5.10.106
v5.10.107
v5.10.108
v5.10.109
v5.10.11
v5.10.110
v5.10.111
v5.10.112
v5.10.113
v5.10.114
v5.10.115
v5.10.116
v5.10.117
v5.10.118
v5.10.119
v5.10.12
v5.10.120
v5.10.121
v5.10.122
v5.10.123
v5.10.124
v5.10.125
v5.10.126
v5.10.127
v5.10.128
v5.10.129
v5.10.13
v5.10.130
v5.10.131
v5.10.132
v5.10.133
v5.10.134
v5.10.135
v5.10.136
v5.10.137
v5.10.138
v5.10.139
v5.10.14
v5.10.140
v5.10.141
v5.10.142
v5.10.143
v5.10.144
v5.10.145
v5.10.146
v5.10.147
v5.10.148
v5.10.149
v5.10.15
v5.10.150
v5.10.151
v5.10.152
v5.10.153
v5.10.154
v5.10.155
v5.10.156
v5.10.157
v5.10.158
v5.10.159
v5.10.16
v5.10.160
v5.10.161
v5.10.162
v5.10.163
v5.10.164
v5.10.165
v5.10.166
v5.10.167
v5.10.168
v5.10.169
v5.10.17
v5.10.170
v5.10.171
v5.10.172
v5.10.173
v5.10.174
v5.10.175
v5.10.176
v5.10.177
v5.10.178
v5.10.179
v5.10.18
v5.10.180
v5.10.181
v5.10.182
v5.10.183
v5.10.184
v5.10.185
v5.10.186
v5.10.187
v5.10.188
v5.10.189
v5.10.19
v5.10.190
v5.10.191
v5.10.192
v5.10.193
v5.10.194
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
v5.10.81
v5.10.82
v5.10.83
v5.10.84
v5.10.85
v5.10.86
v5.10.87
v5.10.88
v5.10.89
v5.10.9
v5.10.90
v5.10.91
v5.10.92
v5.10.93
v5.10.94
v5.10.95
v5.10.96
v5.10.97
v5.10.98
v5.10.99
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.15.1
v5.15.10
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.11
v5.15.110
v5.15.111
v5.15.112
v5.15.113
v5.15.114
v5.15.115
v5.15.116
v5.15.117
v5.15.118
v5.15.119
v5.15.12
v5.15.120
v5.15.121
v5.15.122
v5.15.123
v5.15.124
v5.15.125
v5.15.126
v5.15.127
v5.15.128
v5.15.129
v5.15.13
v5.15.130
v5.15.131
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
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.5
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
v6.*
v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.1.1
v6.1.10
v6.1.11
v6.1.12
v6.1.13
v6.1.14
v6.1.15
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
v6.1.6
v6.1.7
v6.1.8
v6.1.9
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.4.1
v6.4.10
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.2
v6.4.3
v6.4.4
v6.4.5
v6.4.6
v6.4.7
v6.4.8
v6.4.9
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.5.1
v6.5.2
Database specific
vanir_signatures
[
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5a85727239a23de1cc8d93985f1056308128f3e2",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"168801761423302401414781724144768696428",
"26431366409378982054544629077921727275",
"56239455552662445133945038869658267001",
"146911823448482953175467364629711565203"
]
},
"target": {
"file": "arch/arm64/lib/csum.c"
},
"id": "CVE-2023-53726-08790326"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a5ad2f87d8e74e351d3f500ad9d5b3a5653e1c6f",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "187870492134434109303092504943319464463",
"length": 1834.0
},
"target": {
"file": "arch/arm64/lib/csum.c",
"function": "do_csum"
},
"id": "CVE-2023-53726-0a43e05d"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9a43563cfd6b9200ff2f76b3f9fcdcb217ceb523",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "187870492134434109303092504943319464463",
"length": 1834.0
},
"target": {
"file": "arch/arm64/lib/csum.c",
"function": "do_csum"
},
"id": "CVE-2023-53726-265bcb63"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@fcdf904e866de0e3715835e50409fda3b2590527",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"168801761423302401414781724144768696428",
"26431366409378982054544629077921727275",
"56239455552662445133945038869658267001",
"146911823448482953175467364629711565203"
]
},
"target": {
"file": "arch/arm64/lib/csum.c"
},
"id": "CVE-2023-53726-3fe86260"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5a85727239a23de1cc8d93985f1056308128f3e2",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "187870492134434109303092504943319464463",
"length": 1834.0
},
"target": {
"file": "arch/arm64/lib/csum.c",
"function": "do_csum"
},
"id": "CVE-2023-53726-4b8b10f6"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9a43563cfd6b9200ff2f76b3f9fcdcb217ceb523",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"168801761423302401414781724144768696428",
"26431366409378982054544629077921727275",
"56239455552662445133945038869658267001",
"146911823448482953175467364629711565203"
]
},
"target": {
"file": "arch/arm64/lib/csum.c"
},
"id": "CVE-2023-53726-77dc541e"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8bd795fedb8450ecbef18eeadbd23ed8fc7630f5",
"deprecated": false,
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},
"id": "CVE-2023-53726-b8c9b6c4"
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a5ad2f87d8e74e351d3f500ad9d5b3a5653e1c6f",
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"id": "CVE-2023-53726-ba6cd278"
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"id": "CVE-2023-53726-bb2dcac6"
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{
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}
]