CVE-2026-43379
Critical · 9.8CVSS
9.8
EPSS
0.4%
Published
May 8, 2026
CISA due date
—
The record
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close() opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is being accessed after rcu_read_unlock() has been called. This creates a race condition where the memory could be freed by a concurrent writer between the unlock and the subsequent pointer dereferences (opinfo->is_lease, etc.), leading to a use-after-free.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-109618 PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort… CWE-416
- CVE-2026-109619 PHP has various global state that temporarily points into request memory. CWE-416
- CVE-2026-112402 Pillow is a Python imaging library. CWE-416
- CVE-2026-112396 Pillow is a Python imaging library. CWE-416
- CVE-2025-55654 A use-after-free in the gf_filter_pid_get_packet function (filter_core/filter_pid.c) of… CWE-416
- CVE-2026-17591 A flaw was found in libarchive. CWE-416
- CVE-2026-92392 During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with… CWE-416
- CVE-2026-109268 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains a use after free… CWE-416