CVE-2026-23226

CVE Enrichment

CVSS: 7.8 HIGH
EPSS: 0.51%
EPSS Percentile: 43.32%
CISA KEV: Not listed

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add chann_lock to protect ksmbd_chann_list xarray ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published: 18-Feb-2026 23:22
Last Modified: 30-Oct-2026 20:18
EPSS Date: 2026-11-05
CWE: CWE-416

CVSS Vector


            CVSS:3.1                            AV:L /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

CNA Products / Version Status

Linux · Linux Source: CNA · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Default status: affected

6.3 — affected
0 ≤ version < 6.3 — unaffected (semver)
6.1.191 ≤ version ≤ 6.1.* — unaffected (semver)
6.6.160 ≤ version ≤ 6.6.* — unaffected (semver)
6.12.77 ≤ version ≤ 6.12.* — unaffected (semver)
6.18.11 ≤ version ≤ 6.18.* — unaffected (semver)
6.19.1 ≤ version ≤ 6.19.* — unaffected (semver)
7.0 ≤ version ≤ * — unaffected (original_commit_for_fix)

repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Linux · Linux Source: CNA · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Default status: unaffected

91bbf9cb2387a0d76322e9a343bc6bc160f66b3f ≤ version < c00f3938f7ac52770907768e440cf253af9cbb63 — affected (git)
1d9c4172110e645b383ff13eee759728d74f1a5d ≤ version < 43ad494ac6e940a8eabf25d5bd77bb3bb53b1153 — affected (git)
1d9c4172110e645b383ff13eee759728d74f1a5d ≤ version < 4c2ca31608521895dd742a43beca4b4d29762345 — affected (git)
1d9c4172110e645b383ff13eee759728d74f1a5d ≤ version < e4a8a96a93d08570e0405cfd989a8a07e5b6ff33 — affected (git)
1d9c4172110e645b383ff13eee759728d74f1a5d ≤ version < 36ef605c0395b94b826a8c8d6f2697071173de6e — affected (git)
1d9c4172110e645b383ff13eee759728d74f1a5d ≤ version < 4f3a06cc57976cafa8c6f716646be6c79a99e485 — affected (git)
b1caecbf34b8c8260d851ec4efde71f3694460b7 — affected (git)
853c416710b075153c1e1421e099ffbe5dac68ce — affected (git)
6.1.29 ≤ version < 6.1.191 — affected (semver)
5.15.145 ≤ version < 5.16 — affected (semver)
6.2.16 ≤ version < 6.3 — affected (semver)

repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected Products / Versions

linux / linux_kernel Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 6.3 · before (exclusive) 6.18.11
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux / linux_kernel Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 6.19 · before (exclusive) 6.19.1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References

Last enrichment sync: 06-Nov-2026 18:43
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

Tracked as CVE-2026-23226 (CVSS score: 8.8), it falls under the same bug class as CVE-2025-40039, which was patched in October 2025. Weekly Security Roundup Details Phorpiex Botnet, ActiveMQ RCE and AI-Related Threats

CVE (4)

Malware (13)

People (3)

Threat Actors (2)

MITRE ATT&CK (6)

Vendors (6)

Products (11)

Industries (7)

Countries (8)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.