{"id":"CVE-2026-45877","summary":"HID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-ish-hid: fix NULL-ptr-deref in ishtp_bus_remove_all_clients\n\nDuring a warm reset flow, the cl-\u003edevice pointer may be NULL if the\nreset occurs while clients are still being enumerated. Accessing\ncl-\u003edevice-\u003ereference_count without a NULL check leads to a kernel panic.\n\nThis issue was identified during multi-unit warm reboot stress clycles.\nAdd a defensive NULL check for cl-\u003edevice to ensure stability under\nsuch intensive testing conditions.\n\nKASAN: null-ptr-deref in range [0000000000000000-0000000000000007]\nWorkqueue: ish_fw_update_wq fw_reset_work_fn\n\nCall Trace:\n ishtp_bus_remove_all_clients+0xbe/0x130 [intel_ishtp]\n ishtp_reset_handler+0x85/0x1a0 [intel_ishtp]\n fw_reset_work_fn+0x8a/0xc0 [intel_ish_ipc]","modified":"2026-06-27T11:55:22.267477927Z","published":"2026-05-27T12:16:46.910Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45877.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0b605e8ce60698c27a26f512968a597fd620d2e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/272dac57caa981718e7188c80c703e7bb1998054"},{"type":"WEB","url":"https://git.kernel.org/stable/c/56f7db581ee73af53cd512e00a6261a025bf1d58"},{"type":"WEB","url":"https://git.kernel.org/stable/c/feb4bcfd405282de60aba321f13a1272b30c5af4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45877.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45877"},{"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":"3703f53b99e4a7c373ce3568dd3f91f175ebb626"},{"fixed":"0b605e8ce60698c27a26f512968a597fd620d2e8"},{"fixed":"feb4bcfd405282de60aba321f13a1272b30c5af4"},{"fixed":"272dac57caa981718e7188c80c703e7bb1998054"},{"fixed":"56f7db581ee73af53cd512e00a6261a025bf1d58"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45877.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.9.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45877.json"}}],"schema_version":"1.7.5"}