Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
CVE Vulnerability Details :
CVE-2026-43378
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-08 May, 2026 | 14:21
Updated At-20 May, 2026 | 16:08
Rejected At-
▼CVE Numbering Authority (CNA)
smb: server: fix use-after-free in smb2_open()

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 Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • fs/smb/server/smb2pdu.c
Default Status
unaffected
Versions
Affected
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before e1b21e6066615e7d3d3a7aa2677e415e563fd7cc (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before b720c84087cb547f23ce03eab93568c1769e4556 (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 54b48ae83de8bb06e65079d96368efe359d4909c (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 8f5b1a7cb009a93c48e9e334a2f59a660f9afc07 (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 190e5f808e8058640b408ccfed25440b441a718a (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 1e689a56173827669a35da7cb2a3c78ed5c53680 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • fs/smb/server/smb2pdu.c
Default Status
affected
Versions
Affected
  • 5.15
Unaffected
  • From 0 before 5.15 (semver)
  • From 6.1.167 through 6.1.* (semver)
  • From 6.6.130 through 6.6.* (semver)
  • From 6.12.78 through 6.12.* (semver)
  • From 6.18.19 through 6.18.* (semver)
  • From 6.19.9 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7cc
N/A
https://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556
N/A
https://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909c
N/A
https://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07
N/A
https://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718a
N/A
https://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680
N/A
Hyperlink: https://git.kernel.org/stable/c/e1b21e6066615e7d3d3a7aa2677e415e563fd7cc
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/b720c84087cb547f23ce03eab93568c1769e4556
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/54b48ae83de8bb06e65079d96368efe359d4909c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/8f5b1a7cb009a93c48e9e334a2f59a660f9afc07
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/190e5f808e8058640b408ccfed25440b441a718a
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/1e689a56173827669a35da7cb2a3c78ed5c53680
Resource: N/A
Details not found