CVE-2026-53399
Linux Linux, linux kernel 취약점
In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4_alloc_stid() publishes the new stid into cl->cl_stateids via idr_alloc_cyclic() under cl_lock before returning to nfsd4_alloc_layout_stateid(). When nfsd4_layout_setlease() then fails, the error path frees the layout stateid directly with kmem_cache_free() without ever calling idr_remove(), leaving the IDR slot pointing at freed slab memory. Any subsequent IDR walker (states_show, client teardown) dereferences the dangling pointer. The correct teardown for an IDR-published...
- 대응 우선순위
- 점검
- CVSS
- 9.8
- EPSS
- 0.51% 백분위 40.8% · 2026.07.29 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.07.19