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Ubuntu.comUB:CVE-2022-48757

HistoryJun 20, 2024 - 12:00 a.m.

CVE-2022-48757

2024-06-2000:00:00

ubuntu.com

linux kernel

information leakage

net namespace

packet socket

ptype

/proc/net/ptype

unix

6.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.1%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< anyUNKNOWN
ubuntu20.04noarchlinux< anyUNKNOWN
ubuntu22.04noarchlinux< anyUNKNOWN
ubuntu23.10noarchlinux< anyUNKNOWN
ubuntu24.04noarchlinux< anyUNKNOWN
ubuntu14.04noarchlinux< anyUNKNOWN
ubuntu16.04noarchlinux< anyUNKNOWN
ubuntu18.04noarchlinux-aws< anyUNKNOWN
ubuntu20.04noarchlinux-aws< anyUNKNOWN
ubuntu22.04noarchlinux-aws< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< any	UNKNOWN
ubuntu	20.04	noarch	linux	< any	UNKNOWN
ubuntu	22.04	noarch	linux	< any	UNKNOWN
ubuntu	23.10	noarch	linux	< any	UNKNOWN
ubuntu	24.04	noarch	linux	< any	UNKNOWN
ubuntu	14.04	noarch	linux	< any	UNKNOWN
ubuntu	16.04	noarch	linux	< any	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< any	UNKNOWN

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References

git.kernel.org/linus/47934e06b65637c88a762d9c98329ae6e3238888 (5.17-rc2)

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

launchpad.net/bugs/cve/CVE-2022-48757

nvd.nist.gov/vuln/detail/CVE-2022-48757

security-tracker.debian.org/tracker/CVE-2022-48757

www.cve.org/CVERecord?id=CVE-2022-48757