https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 02 Oct 2026 14:49:02 +0000 https://vulnerability.circl.lu/vuln/cve-2026-45927 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>bpf: Require frozen map for calculating map hash</p> <p>Currently, bpf_map_get_info_by_fd calculates and caches the hash of the map regardless of the map&#39;s frozen state.</p> <p>This leads to a TOCTOU bug where userspace can call BPF_OBJ_GET_INFO_BY_FD to cache the hash and then modify the map contents before freezing.</p> <p>Therefore, a trusted loader can be tricked into verifying the stale hash while loading the modified contents.</p> <p>Fix this by returning -EPERM if the map is not frozen when the hash is requested. This ensures the hash is only generated for the final, immutable state of the map.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>bpf: Require frozen map for calculating map hash</p> <p>Currently, bpf_map_get_info_by_fd calculates and caches the hash of the map regardless of the map&#39;s frozen state.</p> <p>This leads to a TOCTOU bug where userspace can call BPF_OBJ_GET_INFO_BY_FD to cache the hash and then modify the map contents before freezing.</p> <p>Therefore, a trusted loader can be tricked into verifying the stale hash while loading the modified contents.</p> <p>Fix this by returning -EPERM if the map is not frozen when the hash is requested. This ensures the hash is only generated for the final, immutable state of the map.</p> https://vulnerability.circl.lu/vuln/cve-2026-45927