CVE-2026-99286 (GCVE-0-2026-99286)

Vulnerability from cvelistv5 – Published: 2026-11-10 18:16 – Updated: 2026-11-10 21:05
VLAI
Title
xen-netback: Fix XenBus connection failure cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: xen-netback: Fix XenBus connection failure cleanup xenvif_get_stats and xenvif_get_ethtool_stats capture vif->num_queues under rcu_read_lock. We need to unpublish vif->num_queues before synchronize_net to ensure that readers that come afterwards will not read a non-zero vif->num_queues and attempt to access invalid queues. This is the same cleanup algorithm as used in backend_disconnect and added in commit b17075d5c198 ("xen-netback: fix race condition on XenBus disconnect"). This is XSA-531
Severity
No CVSS data available.
Assigner
Linux CNA
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ade3082dcdee17c5767069883936d64ff83f6c9f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a97aa838903d15f865d80809f5198ff459c6634a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 07aca7d25ce8578fedde49855983a01c537a782b (git)
Affected: 0 , < 6.12.117 (semver)
Affected: 0 , < 6.18.63 (semver)
Affected: 0 , < 7.3.4 (semver)
Create a notification for this product.
Linux Linux Unaffected: 6.12.117 , ≤ 6.12.* (semver)
Unaffected: 6.18.63 , ≤ 6.18.* (semver)
Unaffected: 7.3.4 , ≤ 7.3.* (semver)
Create a notification for this product.
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