https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 15:20:13 +0000 https://vulnerability.circl.lu/vuln/cve-2026-63937 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer</p> <p>Use READ_ONCE() when reading entries/indices from the guest-accessible Page State Change buffer to defend against TOCTOU bugs.</p> <p>Don&#39;t bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing (and not consuming the result!), as the guest isn&#39;t supposed to touch the buffer while it&#39;s being processed. I.e. using READ_ONCE() is all about protecting against misbehaving guests.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer</p> <p>Use READ_ONCE() when reading entries/indices from the guest-accessible Page State Change buffer to defend against TOCTOU bugs.</p> <p>Don&#39;t bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing (and not consuming the result!), as the guest isn&#39;t supposed to touch the buffer while it&#39;s being processed. I.e. using READ_ONCE() is all about protecting against misbehaving guests.</p> https://vulnerability.circl.lu/vuln/cve-2026-63937