Home/CVE/network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code
CVE

CVE-2022-33743

network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code

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.

HIGH · CVSS 7.8 EPSS 0.00109
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

3
linux kernel>= 5.9 and <= 5.18
xenall versions
debian linuxall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · security@xen.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jul 2022 · 01:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

17
rhsaRHSA-2023:2458Moderate
rhsaRHSA-2023:2148Moderate
usnUSN-5789-1
usnUSN-5773-1
usnUSN-5683-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2022/07/05/5Mailing ListPatchThird Party Advisory
http://xenbits.xen.org/xsa/advisory-405.htmlPatchVendor Advisory
https://www.debian.org/security/2022/dsa-5191Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-405.txtVendor Advisory
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