https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 07 Oct 2026 18:40:59 +0000 https://cve.radiocsirt.org/vuln/cve-2025-21851 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>bpf: Fix softlockup in arena_map_free on 64k page kernel</p> <p>On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y, arena_htab tests cause a segmentation fault and soft lockup. The same failure is not observed with 4k pages on aarch64.</p> <p>It turns out arena_map_free() is calling apply_to_existing_page_range() with the address returned by bpf_arena_get_kern_vm_start(). If this address is not page-aligned the code ends up calling apply_to_pte_range() with that unaligned address causing soft lockup.</p> <p>Fix it by round up GUARD_SZ to PAGE_SIZE &lt;&lt; 1 so that the division by 2 in bpf_arena_get_kern_vm_start() returns a page-aligned value.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>bpf: Fix softlockup in arena_map_free on 64k page kernel</p> <p>On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y, arena_htab tests cause a segmentation fault and soft lockup. The same failure is not observed with 4k pages on aarch64.</p> <p>It turns out arena_map_free() is calling apply_to_existing_page_range() with the address returned by bpf_arena_get_kern_vm_start(). If this address is not page-aligned the code ends up calling apply_to_pte_range() with that unaligned address causing soft lockup.</p> <p>Fix it by round up GUARD_SZ to PAGE_SIZE &lt;&lt; 1 so that the division by 2 in bpf_arena_get_kern_vm_start() returns a page-aligned value.</p> https://cve.radiocsirt.org/vuln/cve-2025-21851