Vulnerability · Published Jul 17, 2023 · Assigned by mitre
CVE-2023-38426
Critical 9.1
In plain English
A critical-severity security flaw in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 88% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.1Critical
Exploit odds (30 days)3.0%top 12.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.37-1 | DEBIAN-CVE-2023-38426 |
| Debian:13 | linux | 6.3.7-1 | DEBIAN-CVE-2023-38426 |
| Debian:14 | linux | 6.3.7-1 | DEBIAN-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux | 5.15.0-83.92 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux | 5.15.0-83.92 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1044.49 | USN-6350-1 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1044.49 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1011.11~22.04.1 | USN-6338-1 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1011.11~22.04.1 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1046.53 | USN-6339-3 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1046.53 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1046.53.1 | USN-6339-3 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1046.53.1 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1041.49 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1041.49 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | 6.2.0-1013.13~22.04.1 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | 6.2.0-1013.13~22.04.1 | USN-6338-2 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1041.46 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1041.46 | USN-6351-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1027.32 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1027.32 | USN-6351-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-32.32~22.04.1 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-32.32~22.04.1 | USN-6338-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1037.40 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1037.40 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1039.45 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1039.45 | USN-6339-4 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1041.46 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1041.46 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-83.92 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-83.92 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1012.12~22.04.1 | USN-6338-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1012.12~22.04.1 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1032.32 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1032.32 | USN-6339-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | 6.2.0-1010.10 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1017.17 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1004.4 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1016.16 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1042.48 | USN-6350-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1042.48 | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1037.40 | USN-6339-3 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1037.40 | UBUNTU-CVE-2023-38426 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-38426 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1025.29 | UBUNTU-CVE-2023-38426 |