CVE-2022-33743

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-05 · updated 2026-06-17

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 products

Debian Linux: 11.0
Linux kernel: from 5.9 through 5.18
xen: all versions

References

http://www.openwall.com/lists/oss-security/2022/07/05/5
http://xenbits.xen.org/xsa/advisory-405.html
https://www.debian.org/security/2022/dsa-5191
https://xenbits.xenproject.org/xsa/advisory-405.txt
http://www.openwall.com/lists/oss-security/2022/07/05/5
http://xenbits.xen.org/xsa/advisory-405.html
https://www.debian.org/security/2022/dsa-5191
https://xenbits.xenproject.org/xsa/advisory-405.txt

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