CVE-2026-89501 ring-buffer: Hold cpu_buffer::lock when resizing a subbuf

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

CVE-2026-89501

CVE-2026-89501 affects the Linux kernel ring-buffer subsystem. The root cause is a race condition : ring_buffer_subbuf_order_set() can clear cpu_buffer->free_page without holding cpu_buffer::lock, creating a concurrency conflict with ring_buffer_alloc_read_page() and ring_buffer_free_read_page...

UBUNTU-CVE-2026-68390

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold hdev-lock for hciconnparams lookups hciconnparamslookup requires hdev-lock be held, otherwise the list iteration or param access is not safe. Hold hdev-lock for params lookups in hcisync...

CVE-2026-62436 grant-table: version change racing with other operations

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...