Riskcovery

CVE-2022-48757

net: fix information leakage in /proc/net/ptype

State
Published
Severity
Not scored
Published
Jun 20, 2024
Updated
May 11, 2026
Reserved
Jun 20, 2024

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before 8f88c78d24f6f346919007cd459fd7e51a8c7779Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before be1ca30331c7923c6f376610c1bd6059be9b1908Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before c38023032a598ec6263e008d62c7f02def72d5c7Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before b67ad6170c0ea87391bb253f35d1f78857736e54Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before e372ecd455b6ebc7720f52bf4b5f5d44d02f2092Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before db044d97460ea792110eb8b971e82569ded536c6Affected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before e43669c77cb3a742b7d84ecdc7c68c4167a7709bAffected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before 839ec7039513a4f84bfbaff953a9393471176beeAffected
  • 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 to before 47934e06b65637c88a762d9c98329ae6e3238888Affected
LinuxLinux
  • 2.6.26Affected
  • before 2.6.26Not affected
  • 4.4.302 through 4.4.*Not affected
  • 4.9.300 through 4.9.*Not affected
  • 4.14.265 through 4.14.*Not affected
  • 4.19.228 through 4.19.*Not affected
  • 5.4.176 through 5.4.*Not affected
  • 5.10.96 through 5.10.*Not affected
  • 5.15.19 through 5.15.*Not affected
  • 5.16.5 through 5.16.*Not affected
  • 5.17 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.