CVE-2025-68813

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Source
https://cve.org/CVERecord?id=CVE-2025-68813
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68813.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-68813
Downstream
BELL (1)
DEBIAN (1)
ECHO (1)
MGASA (2)
OESA (2)
openSUSE (1)
ROOT (5)
SUSE (112)
UBUNTU (1)
Related
openSUSE (1)
SUSE (112)
Published
2026-01-13T15:29:18Z
Modified
2026-10-20T02:30:53Z
Summary
ipvs: fix ipv4 null-ptr-deref in route error path
Details

In the Linux kernel, the following vulnerability has been resolved:

ipvs: fix ipv4 null-ptr-deref in route error path

The IPv4 code path in __ip_vs_get_out_rt() calls dst_link_failure() without ensuring skb->dev is set, leading to a NULL pointer dereference in fib_compute_spec_dst() when ipv4_link_failure() attempts to send ICMP destination unreachable messages.

The issue emerged after commit ed0de45a1008 ("ipv4: recompile ip options in ipv4_link_failure") started calling __ip_options_compile() from ipv4_link_failure(). This code path eventually calls fib_compute_spec_dst() which dereferences skb->dev. An attempt was made to fix the NULL skb->dev dereference in commit 0113d9c9d1cc ("ipv4: fix null-deref in ipv4_link_failure"), but it only addressed the immediate dev_net(skb->dev) dereference by using a fallback device. The fix was incomplete because fib_compute_spec_dst() later in the call chain still accesses skb->dev directly, which remains NULL when IPVS calls dst_link_failure().

The crash occurs when:

  1. IPVS processes a packet in NAT mode with a misconfigured destination
  2. Route lookup fails in __ip_vs_get_out_rt() before establishing a route
  3. The error path calls dst_link_failure(skb) with skb->dev == NULL
  4. ipv4_link_failure() → ipv4_send_dest_unreach() → __ip_options_compile() → fib_compute_spec_dst()
  5. fib_compute_spec_dst() dereferences NULL skb->dev

Apply the same fix used for IPv6 in commit 326bf17ea5d4 ("ipvs: fix ipv6 route unreach panic"): set skb->dev from skb_dst(skb)->dev before calling dst_link_failure().

KASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f] CPU: 1 PID: 12732 Comm: syz.1.3469 Not tainted 6.6.114 #2 RIP: 0010:__in_dev_get_rcu include/linux/inetdevice.h:233 RIP: 0010:fib_compute_spec_dst+0x17a/0x9f0 net/ipv4/fib_frontend.c:285 Call Trace: spec_dst_fill net/ipv4/ip_options.c:232 spec_dst_fill net/ipv4/ip_options.c:229 __ip_options_compile+0x13a1/0x17d0 net/ipv4/ip_options.c:330 ipv4_send_dest_unreach net/ipv4/route.c:1252 ipv4_link_failure+0x702/0xb80 net/ipv4/route.c:1265 dst_link_failure include/net/dst.h:437 __ip_vs_get_out_rt+0x15fd/0x19e0 net/netfilter/ipvs/ip_vs_xmit.c:412 ip_vs_nat_xmit+0x1d8/0xc80 net/netfilter/ipvs/ip_vs_xmit.c:764

Database specific 
{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68813.json"
}
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
Introduced
ed0de45a1008991fdaa27a0152befcb74d126a8b
Fixed
dd72a93c80408f06327dd2d956eb1a656d0b5903
Fixed
312d7cd88882fc6cadcc08b02287497aaaf94bcd
Fixed
cdeff10851c37a002d87a035818ebd60fdb74447
Fixed
4729ff0581fbb7ad098b6153b76b6f5aac94618a
Fixed
25ab24df31f7af843c96a38e0781b9165216e1a8
Fixed
689a627d14788ad772e0fa24c2e57a23dbc7ce90
Fixed
ad891bb3d079a46a821bf2b8867854645191bab0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.18.139
Fixed
3.19
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.4.179
Fixed
4.5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.9.171
Fixed
4.10
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.14.114
Fixed
4.15
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.19.37
Fixed
4.20
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5.0.10
Fixed
5.1
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
6c2fa855d8178699706b1192db2f1f8102b0ba1e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
fbf569d2beee2a4a7a0bc8b619c26101d1211a88
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ff71f99d5fb2daf54340e8b290d0bc4e6b4c1d38
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3d988fcddbe7b8673a231958bd2fba61b5a7ced9
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8a430e56a6485267a1b2d3747209d26c54d1a34b
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
6bd1ee0a993fc9574ae43c1994c54a60cb23a380

Affected versions

v3.*
v3.18.139
v3.18.140
v4.*
v4.14.114
v4.14.115
v4.14.116
v4.14.117
v4.14.118
v4.14.119
v4.14.120
v4.14.121
v4.14.122
v4.14.123
v4.14.124
v4.14.125
v4.14.126
v4.14.127
v4.14.128
v4.14.129
v4.14.130
v4.14.131
v4.14.132
v4.14.133
v4.14.134
v4.14.135
v4.14.136
v4.14.137
v4.14.138
v4.14.139
v4.14.140
v4.14.141
v4.14.142
v4.14.143
v4.14.144
v4.14.145
v4.14.146
v4.14.147
v4.14.148
v4.14.149
v4.14.150
v4.14.151
v4.14.152
v4.14.153
v4.14.154
v4.14.155
v4.14.156
v4.14.157
v4.14.158
v4.14.159
v4.14.160
v4.14.161
v4.14.162
v4.14.163
v4.14.164
v4.14.165
v4.14.166
v4.14.167
v4.14.168
v4.14.169
v4.14.170
v4.14.171
v4.14.172
v4.14.173
v4.14.174
v4.14.175
v4.14.176
v4.14.177
v4.14.178
v4.14.179
v4.14.180
v4.14.181
v4.14.182
v4.14.183
v4.14.184
v4.14.185
v4.14.186
v4.14.187
v4.14.188
v4.14.189
v4.14.190
v4.14.191
v4.14.192
v4.14.193
v4.14.194
v4.14.195
v4.14.196
v4.14.197
v4.14.198
v4.14.199
v4.14.200
v4.14.201
v4.14.202
v4.14.203
v4.14.204
v4.14.205
v4.14.206
v4.14.207
v4.14.208
v4.14.209
v4.14.210
v4.14.211
v4.14.212
v4.14.213
v4.14.214
v4.14.215
v4.14.216
v4.14.217
v4.14.218
v4.14.219
v4.14.220
v4.14.221
v4.14.222
v4.14.223
v4.14.224
v4.14.225
v4.14.226
v4.14.227
v4.14.228
v4.14.229
v4.14.230
v4.14.231
v4.14.232
v4.14.233
v4.14.234
v4.14.235
v4.14.236
v4.14.237
v4.14.238
v4.14.239
v4.14.240
v4.14.241
v4.14.242
v4.14.243
v4.14.244
v4.14.245
v4.14.246
v4.14.247
v4.14.248
v4.14.249
v4.14.250
v4.14.251
v4.14.252
v4.14.253
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v4.14.255
v4.14.256
v4.14.257
v4.14.258
v4.14.259
v4.14.260
v4.14.261
v4.14.262
v4.14.263
v4.14.264
v4.14.265
v4.14.266
v4.14.267
v4.14.268
v4.14.269
v4.14.270
v4.14.271
v4.14.272
v4.14.273
v4.14.274
v4.14.275
v4.14.276
v4.14.277
v4.14.278
v4.14.279
v4.14.280
v4.14.281
v4.14.282
v4.14.283
v4.14.284
v4.14.285
v4.14.286
v4.14.287
v4.14.288
v4.14.289
v4.14.290
v4.14.291
v4.14.292
v4.14.293
v4.14.294
v4.14.295
v4.14.296
v4.14.297
v4.14.298
v4.14.299
v4.14.300
v4.14.301
v4.14.302
v4.14.303
v4.14.304
v4.14.305
v4.14.306
v4.14.307
v4.14.308
v4.14.309
v4.14.310
v4.14.311
v4.14.312
v4.14.313
v4.14.314
v4.14.315
v4.14.316
v4.14.317
v4.14.318
v4.14.319
v4.14.320
v4.14.321
v4.14.322
v4.14.323
v4.14.324
v4.14.325
v4.14.326
v4.14.327
v4.14.328
v4.14.329
v4.14.330
v4.14.331
v4.14.332
v4.14.333
v4.14.334
v4.14.335
v4.14.336
v4.19.100
v4.19.101
v4.19.102
v4.19.103
v4.19.104
v4.19.105
v4.19.106
v4.19.107
v4.19.108
v4.19.109
v4.19.110
v4.19.111
v4.19.112
v4.19.113
v4.19.114
v4.19.115
v4.19.116
v4.19.117
v4.19.118
v4.19.119
v4.19.120
v4.19.121
v4.19.122
v4.19.123
v4.19.124
v4.19.125
v4.19.126
v4.19.127
v4.19.128
v4.19.129
v4.19.130
v4.19.131
v4.19.132
v4.19.133
v4.19.134
v4.19.135
v4.19.136
v4.19.137
v4.19.138
v4.19.139
v4.19.140
v4.19.141
v4.19.142
v4.19.143
v4.19.144
v4.19.145
v4.19.146
v4.19.147
v4.19.148
v4.19.149
v4.19.150
v4.19.151
v4.19.152
v4.19.153
v4.19.154
v4.19.155
v4.19.156
v4.19.157
v4.19.158
v4.19.159
v4.19.160
v4.19.161
v4.19.162
v4.19.163
v4.19.164
v4.19.165
v4.19.166
v4.19.167
v4.19.168
v4.19.169
v4.19.170
v4.19.171
v4.19.172
v4.19.173
v4.19.174
v4.19.175
v4.19.176
v4.19.177
v4.19.178
v4.19.179
v4.19.180
v4.19.181
v4.19.182
v4.19.183
v4.19.184
v4.19.185
v4.19.186
v4.19.187
v4.19.188
v4.19.189
v4.19.190
v4.19.191
v4.19.192
v4.19.193
v4.19.194
v4.19.195
v4.19.196
v4.19.197
v4.19.198
v4.19.199
v4.19.200
v4.19.201
v4.19.202
v4.19.203
v4.19.204
v4.19.205
v4.19.206
v4.19.207
v4.19.208
v4.19.209
v4.19.210
v4.19.211
v4.19.212
v4.19.213
v4.19.214
v4.19.215
v4.19.216
v4.19.217
v4.19.218
v4.19.219
v4.19.220
v4.19.221
v4.19.222
v4.19.223
v4.19.224
v4.19.225
v4.19.226
v4.19.227
v4.19.228
v4.19.229
v4.19.230
v4.19.231
v4.19.232
v4.19.233
v4.19.234
v4.19.235
v4.19.236
v4.19.237
v4.19.238
v4.19.239
v4.19.240
v4.19.241
v4.19.242
v4.19.243
v4.19.244
v4.19.245
v4.19.246
v4.19.247
v4.19.248
v4.19.249
v4.19.250
v4.19.251
v4.19.252
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v4.19.255
v4.19.256
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v4.19.259
v4.19.260
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v4.19.263
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v4.19.270
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v4.19.293
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v4.19.297
v4.19.298
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v4.19.300
v4.19.301
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v4.19.303
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v4.19.305
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v4.19.307
v4.19.308
v4.19.309
v4.19.310
v4.19.311
v4.19.312
v4.19.313
v4.19.314
v4.19.315
v4.19.316
v4.19.317
v4.19.318
v4.19.319
v4.19.320
v4.19.321
v4.19.322
v4.19.323
v4.19.324
v4.19.325
v4.19.37
v4.19.38
v4.19.39
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
v4.19.50
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
v4.19.60
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
v4.19.70
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
v4.19.80
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
v4.19.90
v4.19.91
v4.19.92
v4.19.93
v4.19.94
v4.19.95
v4.19.96
v4.19.97
v4.19.98
v4.19.99
v4.4.179
v4.4.180
v4.4.181
v4.4.182
v4.4.183
v4.4.184
v4.4.185
v4.4.186
v4.4.187
v4.4.188
v4.4.189
v4.4.190
v4.4.191
v4.4.192
v4.4.193
v4.4.194
v4.4.195
v4.4.196
v4.4.197
v4.4.198
v4.4.199
v4.4.200
v4.4.201
v4.4.202
v4.4.203
v4.4.204
v4.4.205
v4.4.206
v4.4.207
v4.4.208
v4.4.209
v4.4.210
v4.4.211
v4.4.212
v4.4.213
v4.4.214
v4.4.215
v4.4.216
v4.4.217
v4.4.218
v4.4.219
v4.4.220
v4.4.221
v4.4.222
v4.4.223
v4.4.224
v4.4.225
v4.4.226
v4.4.227
v4.4.228
v4.4.229
v4.4.230
v4.4.231
v4.4.232
v4.4.233
v4.4.234
v4.4.235
v4.4.236
v4.4.237
v4.4.238
v4.4.239
v4.4.240
v4.4.241
v4.4.242
v4.4.243
v4.4.244
v4.4.245
v4.4.246
v4.4.247
v4.4.248
v4.4.249
v4.4.250
v4.4.251
v4.4.252
v4.4.253
v4.4.254
v4.4.255
v4.4.256
v4.4.257
v4.4.258
v4.4.259
v4.4.260
v4.4.261
v4.4.262
v4.4.263
v4.4.264
v4.4.265
v4.4.266
v4.4.267
v4.4.268
v4.4.269
v4.4.270
v4.4.271
v4.4.272
v4.4.273
v4.4.274
v4.4.275
v4.4.276
v4.4.277
v4.4.278
v4.4.279
v4.4.280
v4.4.281
v4.4.282
v4.4.283
v4.4.284
v4.4.285
v4.4.286
v4.4.287
v4.4.288
v4.4.289
v4.4.290
v4.4.291
v4.4.292
v4.4.293
v4.4.294
v4.4.295
v4.4.296
v4.4.297
v4.4.298
v4.4.299
v4.4.300
v4.4.301
v4.4.302
v4.9.171
v4.9.172
v4.9.173
v4.9.174
v4.9.175
v4.9.176
v4.9.177
v4.9.178
v4.9.179
v4.9.180
v4.9.181
v4.9.182
v4.9.183
v4.9.184
v4.9.185
v4.9.186
v4.9.187
v4.9.188
v4.9.189
v4.9.190
v4.9.191
v4.9.192
v4.9.193
v4.9.194
v4.9.195
v4.9.196
v4.9.197
v4.9.198
v4.9.199
v4.9.200
v4.9.201
v4.9.202
v4.9.203
v4.9.204
v4.9.205
v4.9.206
v4.9.207
v4.9.208
v4.9.209
v4.9.210
v4.9.211
v4.9.212
v4.9.213
v4.9.214
v4.9.215
v4.9.216
v4.9.217
v4.9.218
v4.9.219
v4.9.220
v4.9.221
v4.9.222
v4.9.223
v4.9.224
v4.9.225
v4.9.226
v4.9.227
v4.9.228
v4.9.229
v4.9.230
v4.9.231
v4.9.232
v4.9.233
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v4.9.237
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v4.9.240
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v4.9.255
v4.9.256
v4.9.257
v4.9.258
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v4.9.260
v4.9.261
v4.9.262
v4.9.263
v4.9.264
v4.9.265
v4.9.266
v4.9.267
v4.9.268
v4.9.269
v4.9.270
v4.9.271
v4.9.272
v4.9.273
v4.9.274
v4.9.275
v4.9.276
v4.9.277
v4.9.278
v4.9.279
v4.9.280
v4.9.281
v4.9.282
v4.9.283
v4.9.284
v4.9.285
v4.9.286
v4.9.287
v4.9.288
v4.9.289
v4.9.290
v4.9.291
v4.9.292
v4.9.293
v4.9.294
v4.9.295
v4.9.296
v4.9.297
v4.9.298
v4.9.299
v4.9.300
v4.9.301
v4.9.302
v4.9.303
v4.9.304
v4.9.305
v4.9.306
v4.9.307
v4.9.308
v4.9.309
v4.9.310
v4.9.311
v4.9.312
v4.9.313
v4.9.314
v4.9.315
v4.9.316
v4.9.317
v4.9.318
v4.9.319
v4.9.320
v4.9.321
v4.9.322
v4.9.323
v4.9.324
v4.9.325
v4.9.326
v4.9.327
v4.9.328
v4.9.329
v4.9.330
v4.9.331
v4.9.332
v4.9.333
v4.9.334
v4.9.335
v4.9.336
v4.9.337
v5.*
v5.0.10
v5.0.11
v5.0.12
v5.0.13
v5.0.14
v5.0.15
v5.0.16
v5.0.17
v5.0.18
v5.0.19
v5.0.20
v5.0.21

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68813.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.1.0
Fixed
5.10.248
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.198
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.160
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.120
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.64
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68813.json"