{"id":"CVE-2026-98032","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace du…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace du…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= bce761d757452ba5eb77e11fecc37a04b67494e7 < 75b37b8369778b69ce9738d1c97685a1615cb252","Linux >= bce761d757452ba5eb77e11fecc37a04b67494e7 < dae8dda341d2d9034a90d59e8a7d502e1263813f","Linux 6.8"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:31.900","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98032","references":[{"url":"https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.852Z","slug":"CVE-2026-98032","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}