Vulnerability · Published Jun 20, 2024 · Assigned by Linux
CVE-2022-48757net: fix information leakage in /proc/net/ptype
High 7.1
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.1High
Exploit odds (30 days)0.2%top 87.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.16.1.rt7.357.el8_10 | ALSA-2024:5102 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | perf | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.16.1.el8_10 | ALSA-2024:5101 |
| Debian:12 | linux | 5.16.7-1 | DEBIAN-CVE-2022-48757 |
| Debian:13 | linux | 5.16.7-1 | DEBIAN-CVE-2022-48757 |
| Debian:14 | linux | 5.16.7-1 | DEBIAN-CVE-2022-48757 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.16.1.el8_10 | RLSA-2024:5101 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.16.1.el8_10.cloud.0.1 | RXSA-2024:5101 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.16.1.rt7.357.el8_10 | RLSA-2024:5102 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2022-48757 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2022-48757 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before 8f88c78d24f6f346919007cd459fd7e51a8c77792feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before be1ca30331c7923c6f376610c1bd6059be9b19082feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before c38023032a598ec6263e008d62c7f02def72d5c72feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before b67ad6170c0ea87391bb253f35d1f78857736e542feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before e372ecd455b6ebc7720f52bf4b5f5d44d02f20922feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before db044d97460ea792110eb8b971e82569ded536c62feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before e43669c77cb3a742b7d84ecdc7c68c4167a7709b2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 – before 839ec7039513a4f84bfbaff953a9393471176bee |
| Linux | Linux | 2.6.26 |
References
- https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779
- https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908
- https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7
- https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54
- https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092
- https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6
- https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b
- https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee
- https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888