Vulnerability · Published Apr 5, 2023 · Assigned by redhat
CVE-2023-1838
High 7.1
In plain English
A high-severity use-after-free in Kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.1High
Exploit odds (30 days)0.3%top 83.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-doc | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | perf | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | python3-perf | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| Debian:12 | linux | 5.17.11-1 | DEBIAN-CVE-2023-1838 |
| Debian:13 | linux | 5.17.11-1 | DEBIAN-CVE-2023-1838 |
| Debian:14 | linux | 5.17.11-1 | DEBIAN-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux | 5.15.0-47.51 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1019.23 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1019.24 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1017.23 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1015.18 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1002.4 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1013.15 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1015.20 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1017.21 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-47.53 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1007.7 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1013.14 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1017.22 | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1014.16 | UBUNTU-CVE-2023-1838 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-1838 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-1838 |
Affected products (as reported)
Weakness: CWE-416