{"id":"CVE-2026-43215","summary":"cifs: Fix locking usage for tcon fields","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix locking usage for tcon fields\n\nWe used to use the cifs_tcp_ses_lock to protect a lot of objects\nthat are not just the server, ses or tcon lists. We later introduced\nsrv_lock, ses_lock and tc_lock to protect fields within the\ncorresponding structs. This was done to provide a more granular\nprotection and avoid unnecessary serialization.\n\nThere were still a couple of uses of cifs_tcp_ses_lock to provide\ntcon fields. In this patch, I've replaced them with tc_lock.","modified":"2026-06-18T03:57:30.077465143Z","published":"2026-05-06T11:28:17.425Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43215.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136"},{"type":"WEB","url":"https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62"},{"type":"WEB","url":"https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43215.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43215"},{"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":"d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8"},{"fixed":"953953abb66e52c224057ab91e404284fefeab62"},{"fixed":"601dd3b79769b38d30b693c40afdb2a4b7edf9d0"},{"fixed":"3969db6b22e3d90d8c5f22ac1a7fe0350a94c136"},{"fixed":"8c59eeeeffa1524ef57e173a89a1a3ff539888d5"},{"fixed":"96c4af418586ee9a6aab61738644366426e05316"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43215.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43215.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}