What’s Vulnerable › Vulnerabilities

CVE-2022-42328

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-07 · updated 2026-10-14
• Weakness: CWE-667

Description

Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329).

Affected products

• Debian Linux: 10.0
• Linux kernel: before 6.0 — fixed in 6.0

How to fix

Upgrade to a fixed version: Linux kernel 6.0. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2022/12/08/2
• http://www.openwall.com/lists/oss-security/2022/12/08/3
• http://www.openwall.com/lists/oss-security/2022/12/09/2
• https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
• https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
• https://xenbits.xenproject.org/xsa/advisory-424.txt
• http://www.openwall.com/lists/oss-security/2022/12/08/2
• http://www.openwall.com/lists/oss-security/2022/12/08/3
• http://www.openwall.com/lists/oss-security/2022/12/09/2
• https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
• https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
• https://xenbits.xenproject.org/xsa/advisory-424.txt

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