CVE-2026-43378
In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2_open() The opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2_open() The opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.31% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718aPatch
- https://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680Patch
- https://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909cPatch
- https://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07Patch
- https://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556Patch
- https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7ccPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.