CVE-2022-33743
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)
02 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)
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 28.6% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2022-07-05 12:50Z4 YR AGO
- Last updated
- 2024-08-03 08:09Z2 YR AGO
- Reserved
- 2022-06-15
- Assigning CNA
- XEN
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-459Incomplete CleanupBase
- Data version
- 5.1
- Document digest
- 5f12ba61bf1ffdb21ba31a13803f5b6dc64749e2c4c979c957d14c78b253f0c4
05 Affected products
06 References
- xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-405.txt
- xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-405.html
- www.openwall.com[oss-security] 20220705 Xen Security Advisory 405 v3 (CVE-2022-33743) - network backend may cause Linux netfront to use freed SKBshttp://www.openwall.com/lists/oss-security/2022/07/05/5
- www.debian.orgDSA-5191https://www.debian.org/security/2022/dsa-5191
07 Fixed in
AlmaLinux 9
- bpftool Fixed in 7.0.0-284.11.1.el9_2
- kernel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-abi-stablelists Fixed in 5.14.0-284.11.1.el9_2
- kernel-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-cross-headers Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-uki-virt Fixed in 5.14.0-284.11.1.el9_2
- kernel-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-doc Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-rt Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-core Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-core Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-devel Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-kvm Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-modules Fixed in 5.14.0-284.11.1.rt14.296.el9_2
21 further packages in AlmaLinux 9 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- bpftool Fixed in 7.0.0-284.11.1.el9_2
- kernel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-debug-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-64k-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-abi-stablelists Fixed in 5.14.0-284.11.1.el9_2
- kernel-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-cross-headers Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-debug-uki-virt Fixed in 5.14.0-284.11.1.el9_2
- kernel-devel Fixed in 5.14.0-284.11.1.el9_2
- kernel-devel-matched Fixed in 5.14.0-284.11.1.el9_2
- kernel-doc Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules-core Fixed in 5.14.0-284.11.1.el9_2
- kernel-modules-extra Fixed in 5.14.0-284.11.1.el9_2
- kernel-rt Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-core Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-core Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-devel Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-kvm Fixed in 5.14.0-284.11.1.rt14.296.el9_2
- kernel-rt-debug-modules Fixed in 5.14.0-284.11.1.rt14.296.el9_2
21 further packages in CloudLinux 9 not shown (first 40 listed).
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 5.18.14-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.18.14-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.18.14-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-hwe-edge No fix yet
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-azure No fix yet
- linux-azure-5.3 No fix yet
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-5.3 No fix yet
- linux-gke-4.15 No fix yet
- linux-gke-5.4 No fix yet
- linux-gkeop-5.4 No fix yet
- linux-hwe No fix yet
- linux-oem No fix yet
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1020.24~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1020.25~20.04.1
- linux-azure-5.8 No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1018.24~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke-5.15 Fixed in 5.15.0-1016.19~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-48.54~20.04.1
- linux-hwe-5.8 No fix yet
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1016.21~20.04.1
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-48.54~20.04.1
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 Fixed in 5.14.0-1055.62
- linux-oem-5.6 No fix yet
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1018.23~20.04.1
- linux-oracle-5.8 No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
- linux-riscv-5.11 No fix yet
- linux-riscv-5.15 Fixed in 5.15.0-1019.22~20.04.1
- linux-riscv-5.8 No fix yet
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux Fixed in 5.15.0-48.54
- linux-aws Fixed in 5.15.0-1020.24
- linux-azure Fixed in 5.15.0-1020.25
- linux-azure-fde Fixed in 5.15.0-1024.30.1
- linux-gcp Fixed in 5.15.0-1018.24
- linux-gke Fixed in 5.15.0-1016.19
- linux-gkeop Fixed in 5.15.0-1003.5
- linux-ibm Fixed in 5.15.0-1015.17
- linux-intel-iot-realtime No fix yet
- linux-intel-iotg Fixed in 5.15.0-1016.21
- linux-kvm Fixed in 5.15.0-1018.22
- linux-lowlatency Fixed in 5.15.0-48.54
- linux-nvidia Fixed in 5.15.0-1007.7
- linux-oem-5.17 Fixed in 5.17.0-1024.25
- linux-oracle Fixed in 5.15.0-1018.23
- linux-raspi Fixed in 5.15.0-1015.17
- linux-realtime No fix yet
- linux-riscv Fixed in 5.15.0-1019.22
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 22.04 LTS
- linux-realtime Fixed in 5.15.0-1021.21Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.