CVE-2026-99287 (GCVE-0-2026-99287)
Vulnerability from cvelistv5 – Published: 2026-11-10 18:16 – Updated: 2026-11-10 21:05
VLAI
EPSS
VEX
Title
xen-netback: Zero out sring pointers on unmap
Summary
In the Linux kernel, the following vulnerability has been resolved:
xen-netback: Zero out sring pointers on unmap
If xenvif_map_frontend_data_rings() fails when a ring is already mapped,
it unmaps them via xenvif_unmap_frontend_data_rings() which keeps the
ring pointers unchanged. xenvif_connect_data()'s cleanup path calls
xenvif_disconnect_queue() which in turn calls
xenvif_unmap_frontend_data_rings() again, which will attempt to unmap the
pointers a second time.
Zero out the ring pointers after they are unmapped to avoid this issue.
This is XSA-532
Severity
No CVSS data available.
Assigner
Linux
CNA
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
2ac061ce97f413bfbbdd768f7d2e0fda2e8170df , < 87fd475dc4e354088f6534285388e7b061f54b35
(git)
Affected: 2ac061ce97f413bfbbdd768f7d2e0fda2e8170df , < c5f54af611ff6fe1d53fa05d8e87b469dc56122b (git) Affected: 2ac061ce97f413bfbbdd768f7d2e0fda2e8170df , < e7ba61734d6ad6adfd5bf617052e590743211669 (git) |
|
| Linux | Linux |
Affected:
5.5
Unaffected: 0 , < 5.5 (semver) Unaffected: 6.12.117 , ≤ 6.12.* (semver) Unaffected: 6.18.63 , ≤ 6.18.* (semver) Unaffected: 7.3.4 , ≤ 7.3.* (semver) |
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