In the Linux kernel, the following vulnerability has been resolved:
net: fix information leakage in /proc/net/ptype
In one net namespace, after creating a packet socket without binding
it to a device, users in other net namespaces can observe the new
packet_type
added by this packet socket by reading /proc/net/ptype
file. This is minor information leakage as packet socket is
namespace aware.
Add a net pointer in packet_type
to keep the net namespace of
of corresponding packet socket. In ptype_seq_show
, this net pointer
must be checked when it is not NULL.
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/linux/netdevice.h",
"net/core/net-procfs.c",
"net/packet/af_packet.c"
],
"versions": [
{
"version": "2feb27dbe00c",
"lessThan": "8f88c78d24f6",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "be1ca30331c7",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "c38023032a59",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "b67ad6170c0e",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "e372ecd455b6",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "db044d97460e",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "e43669c77cb3",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "839ec7039513",
"status": "affected",
"versionType": "git"
},
{
"version": "2feb27dbe00c",
"lessThan": "47934e06b656",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/linux/netdevice.h",
"net/core/net-procfs.c",
"net/packet/af_packet.c"
],
"versions": [
{
"version": "2.6.26",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.26",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.4.302",
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.9.300",
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.14.265",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.228",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.176",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.96",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.19",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.16.5",
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.17",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888
git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee
git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779
git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54
git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908
git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7
git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6
git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092
git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b