Vulnerability · Published Apr 20, 2023 · Assigned by redhat
CVE-2023-2177
Medium 5.5
In plain English
A medium-severity null pointer dereference in 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 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 89.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A null pointer dereference issue was found in the sctp network protocol in net/sctp/stream_sched.c in Linux Kernel. If stream_in allocation is failed, stream_out is freed which would further be accessed. A local user could use this flaw to crash the system or potentially cause a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.18.16-1 | DEBIAN-CVE-2023-2177 |
| Debian:13 | linux | 5.18.16-1 | DEBIAN-CVE-2023-2177 |
| Debian:14 | linux | 5.18.16-1 | DEBIAN-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux | 5.15.0-50.56 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1021.25 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1021.26 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1024.30.1 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1019.25 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1017.20 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1004.6 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1015.17 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1017.22 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1019.23 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-50.56 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1015.15 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1019.24 | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1016.18 | UBUNTU-CVE-2023-2177 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-2177 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-2177 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H