CVE-2026-43378
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < e1b21e6066615e7d3d3a7aa2677e415e563fd7cc | affected |
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < b720c84087cb547f23ce03eab93568c1769e4556 | affected |
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 54b48ae83de8bb06e65079d96368efe359d4909c | affected |
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 8f5b1a7cb009a93c48e9e334a2f59a660f9afc07 | affected |
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 190e5f808e8058640b408ccfed25440b441a718a | affected |
| Linux | Linux | e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 1e689a56173827669a35da7cb2a3c78ed5c53680 | affected |
| Linux | Linux | 5.15 | affected |
| Linux | Linux | 0 < 5.15 | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.78 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.19 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.9 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7cc
- https://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556
- https://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909c
- https://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07
- https://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718a
- https://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680
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