Vulnerability · Published Jul 5, 2022 · Assigned by XEN
CVE-2022-33743
High 7.8
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 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 69.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further processing to nevertheless be freed.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | bpftool | 7.0.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-doc | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-rt | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-kvm | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-kvm | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-tools | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | perf | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | python3-perf | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | rtla | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| Debian:12 | linux | 5.18.14-1 | DEBIAN-CVE-2022-33743 |
| Debian:13 | linux | 5.18.14-1 | DEBIAN-CVE-2022-33743 |
| Debian:14 | linux | 5.18.14-1 | DEBIAN-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux | 5.15.0-48.54 | USN-5624-1 |
| Ubuntu:22.04:LTS | linux | 5.15.0-48.54 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1020.24 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1020.24 | USN-5624-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1020.25 | USN-5624-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1020.25 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1024.30.1 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1018.24 | USN-5633-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1018.24 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1016.19 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1016.19 | USN-5633-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1003.5 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1003.5 | USN-5635-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1015.17 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1015.17 | USN-5683-1 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1016.21 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1016.21 | USN-5655-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1018.22 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1018.22 | USN-5624-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-48.54 | USN-5624-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-48.54 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1007.7 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1024.25 | USN-5773-1 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1024.25 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1018.23 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1018.23 | USN-5640-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1015.17 | USN-5633-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1015.17 | UBUNTU-CVE-2022-33743 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1019.22 | UBUNTU-CVE-2022-33743 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-33743 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2022-33743 |
Affected products (as reported)
References
- https://xenbits.xenproject.org/xsa/advisory-405.txt x_refsource_MISC
- http://xenbits.xen.org/xsa/advisory-405.html x_refsource_CONFIRM
- [oss-security] 20220705 Xen Security Advisory 405 v3 (CVE-2022-33743) - network backend may cause Linux netfront to use freed SKBs mailing-list, x_refsource_MLIST
- DSA-5191 vendor-advisory, x_refsource_DEBIAN