Vulnerability · Published Jul 17, 2023 · Assigned by mitre
CVE-2023-38427
Critical 9.8
In plain English
A critical-severity out-of-bounds read 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 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.2%top 30.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.37-1 | DEBIAN-CVE-2023-38427 |
| Debian:13 | linux | 6.3.11-1 | DEBIAN-CVE-2023-38427 |
| Debian:14 | linux | 6.3.11-1 | DEBIAN-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux | 5.15.0-102.112 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux | 5.15.0-102.112 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1057.63 | USN-6725-2 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1057.63 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1013.13~22.04.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1013.13~22.04.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1060.69 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1060.69 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1014.14~22.04.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1014.14~22.04.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1060.69.1 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1060.69.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1014.14~22.04.1.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1014.14~22.04.1.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1055.63 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1055.63 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | 6.2.0-1016.18~22.04.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | 6.2.0-1016.18~22.04.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1054.59 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1054.59 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1040.46 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1040.46 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-34.34~22.04.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-34.34~22.04.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1050.53 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1050.53 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1052.58 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1052.58 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1054.59 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1054.59 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-102.112 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-102.112 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1014.14~22.04.1 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1014.14~22.04.1 | USN-6412-1 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1048.48 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1048.48 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | 6.2.0-1011.11 | USN-6466-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | 6.2.0-1011.11 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1025.25 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1012.12 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1016.16 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1055.61 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1055.61 | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1050.53 | USN-6725-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1050.53 | UBUNTU-CVE-2023-38427 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-38427 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1030.34 | UBUNTU-CVE-2023-38427 |
Affected products (as reported)
Weakness: CWE-125, CWE-191 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H