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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).

🗓️ 13 Dec 2022 08:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 4 Views

Patch for XSA-392 may cause deadlock freeing dropped socket buffer; netpoll can trigger it on the xen-netback interface.

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13 Dec 2022 08:00Current
7.2High risk
Vulners AI Score7.2
CVSS 3.15.5 - 6.2
EPSS0.00036
SSVC
4