{"id":"CVE-2026-98668","title":"iio: buffer: Ensure bounce buffer used for unaligned case is zeroed.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: Ensure bounce buffer used for unaligned case is zeroed.\n\niio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory\nto userspace if the data p…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2","Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < b134ef820610bd873c9d59999d9824710964ce82","Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < 3a87212b1a09a1fdd730ce5520f7b1fc0b488511","Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < 5330036bc68d23672bfcc16c60c54701ae123083","Linux 5.16"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:44:55.291Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98668","references":[{"url":"https://git.kernel.org/stable/c/b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2"},{"url":"https://git.kernel.org/stable/c/b134ef820610bd873c9d59999d9824710964ce82"},{"url":"https://git.kernel.org/stable/c/3a87212b1a09a1fdd730ce5520f7b1fc0b488511"},{"url":"https://git.kernel.org/stable/c/5330036bc68d23672bfcc16c60c54701ae123083"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.533Z","slug":"CVE-2026-98668","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: Ensure bounce buffer used for unaligned case is zeroed.\n\niio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory\nto userspace if the data passed in is not a multiple of 8 bytes and the\ntimestamp is enabled. Specify __GFP_ZERO for the devm_krealloc()\nto ensure any extra space is cleared.\n\n## Affected\n\n- `Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2`\n- `Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < b134ef820610bd873c9d59999d9824710964ce82`\n- `Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < 3a87212b1a09a1fdd730ce5520f7b1fc0b488511`\n- `Linux >= 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 < 5330036bc68d23672bfcc16c60c54701ae123083`\n- `Linux 5.16`\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":[]}