cbcvebase.
CVE-2024-42283
published 2024-08-17

CVE-2024-42283: In the Linux kernel, the following vulnerability has been resolved: net: nexthop: Initialize all fields in dumped nexthops struct nexthop_grp contains two…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.5th percentile
In the Linux kernel, the following vulnerability has been resolved:

net: nexthop: Initialize all fields in dumped nexthops

struct nexthop_grp contains two reserved fields that are not initialized by
nla_put_nh_group(), and carry garbage. This can be observed e.g. with
strace (edited for clarity):

# ip nexthop add id 1 dev lo
# ip nexthop add id 101 group 1
# strace -e recvmsg ip nexthop get id 101
...
recvmsg(... [{nla_len=12, nla_type=NHA_GROUP},
[{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52

The fields are reserved and therefore not currently used. But as they are, they
leak kernel memory, and the fact they are not just zero complicates repurposing
of the fields for new ends. Initialize the full structure.

Affected

31 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
debianlinux-6.1< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
linuxlinux
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < fd06cb4a5fc7bda3dea31712618a62af72a1c6cbfd06cb4a5fc7bda3dea31712618a62af72a1c6cb
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < 5cc4d71dda2dd4f1520f40e634a527022e48ccd85cc4d71dda2dd4f1520f40e634a527022e48ccd8
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < 9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d09e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < 1377de719652d868f5317ba8398b7e74c5f0430b1377de719652d868f5317ba8398b7e74c5f0430b
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < 7704460acd7f5d35eb07c52500987dc9b95313fb7704460acd7f5d35eb07c52500987dc9b95313fb
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < a13d3864b76ac87085ec530b2ff8e37482a63a96a13d3864b76ac87085ec530b2ff8e37482a63a96
linuxlinux>= 430a049190de3c9e219f43084de9f1122da04570 < 6d745cd0e9720282cd291d36b9db528aea18add26d745cd0e9720282cd291d36b9db528aea18add2
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.106-16.1.106-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 5.11 < 5.15.1655.15.165
linuxlinux_kernel>= 5.16 < 6.1.1036.1.103
linuxlinux_kernel>= 5.3 < 5.4.2825.4.282
linuxlinux_kernel>= 5.5 < 5.10.2245.10.224
linuxlinux_kernel>= 6.2 < 6.6.446.6.44
linuxlinux_kernel>= 6.7 < 6.10.36.10.3
msrcazl3_kernel_6.6.43.1-7_on_azure_linux_3.0
msrcazl3_kernel_6.6.47.1-1_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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