{"id":"CVE-2026-80958","summary":"dm-pcache: clamp the tail kset read to the segment data region","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: clamp the tail kset read to the segment data region\n\nThe tail-kset read in cache_replay(), the writeback worker and the GC\nworker bounds its length by PCACHE_SEG_SIZE - seg_off, the raw segment\nsize rather than the data region. A tail near the segment end reads past\nthe segment data into the following control area.\n\nClamp the read to cache_seg_remain(), the data region.","modified":"2026-09-13T03:46:53.226349374Z","published":"2026-09-11T19:42:25.861Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80958.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1ab55354368d071ebaee4d8c82313955eab65a04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/becf07e2b0053027495ecd671b1f82fb2e615f68"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80958.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80958"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0"},{"fixed":"2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c"},{"fixed":"1ab55354368d071ebaee4d8c82313955eab65a04"},{"fixed":"becf07e2b0053027495ecd671b1f82fb2e615f68"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80958.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80958.json"}}],"schema_version":"1.9.0"}