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🛡️ CVE-2023-52442 on Ubuntu — linux-allwinner-5.19

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in compound request smb2_get_msg() in smb2_get_ksmbd_tcon() and smb2_check_user_session() will always return the first request smb2 header in a compound request. if SMB2_TREE_CONNECT_HE is the first command in compound request, will return 0, i.e. The tree id check is skipped. This patch use ksmbd_req_buf_next() to get current command in compound.

Distribution advisory

This page covers CVE-2023-52442 as tracked by Ubuntu, for the package linux-allwinner-5.19. The fix is available in version 5.15.0-1040.46~20.04.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2023-52442 is recorded against 66 packages.

  • linux-allwinner-5.19
  • linux-aws-5.0
  • linux-aws-5.11
  • linux-aws-5.13
  • linux-aws-5.19
  • linux-aws-5.3
  • linux-aws-5.8
  • linux-aws-6.2
  • linux-azure
  • linux-azure-5.11
  • linux-azure-5.13
  • linux-azure-5.19
  • linux-azure-5.3
  • linux-azure-5.8
  • linux-azure-6.2
  • linux-azure-edge
  • linux-azure-fde
  • linux-azure-fde-5.19
  • linux-azure-fde-6.2
  • linux-gcp
  • linux-gcp-5.11
  • linux-gcp-5.13
  • linux-gcp-5.19
  • linux-gcp-5.3
Show the remaining 42 packages
  • linux-gcp-5.8
  • linux-gcp-6.2
  • linux-gke
  • linux-gke-4.15
  • linux-gke-5.15
  • linux-gke-5.4
  • linux-gkeop
  • linux-gkeop-5.15 (fixed in 5.15.0-1040.46~20.04.1)
  • linux-gkeop-5.4
  • linux-hwe
  • linux-hwe-5.11
  • linux-hwe-5.13
  • linux-hwe-5.19
  • linux-hwe-5.8
  • linux-hwe-6.2
  • linux-hwe-edge
  • linux-intel-5.13
  • linux-lowlatency-hwe-5.19
  • linux-lowlatency-hwe-6.2
  • linux-nvidia-6.2
  • linux-oem
  • linux-oem-5.10
  • linux-oem-5.13
  • linux-oem-5.14
  • linux-oem-5.17
  • linux-oem-5.6
  • linux-oem-6.0
  • linux-oem-6.1
  • linux-oracle-5.0
  • linux-oracle-5.11
  • linux-oracle-5.13
  • linux-oracle-5.3
  • linux-oracle-5.8
  • linux-raspi-realtime
  • linux-raspi2
  • linux-realtime
  • linux-riscv
  • linux-riscv-5.11
  • linux-riscv-5.19
  • linux-riscv-5.8
  • linux-starfive-5.19
  • linux-starfive-6.2

Timeline and source

Published on 21 February 2024 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
www.cve.org (Report)
ubuntu.com (Advisory)

Other advisories for this package

linux-allwinner-5.19 has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-52442 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-02-21
Updated 2026-08-20
Modified 2026-08-06
Fix URL N/A

Affected Packages

Software From version Fixed in
linux-allwinner-5.19 — —
linux-aws-5.0 — —
linux-aws-5.11 — —
linux-aws-5.13 — —
linux-aws-5.19 — —
linux-aws-5.3 — —
linux-aws-5.8 — —
linux-aws-6.2 — —
linux-azure — —
linux-azure-5.11 — —
linux-azure-5.13 — —
linux-azure-5.19 — —
linux-azure-5.3 — —
linux-azure-5.8 — —
linux-azure-6.2 — —
linux-azure-edge — —
linux-azure-fde — —
linux-azure-fde-5.19 — —
linux-azure-fde-6.2 — —
linux-gcp — —
linux-gcp-5.11 — —
linux-gcp-5.13 — —
linux-gcp-5.19 — —
linux-gcp-5.3 — —
linux-gcp-5.8 — —
linux-gcp-6.2 — —
linux-gke — —
linux-gke-4.15 — —
linux-gke-5.15 — —
linux-gke-5.4 — —
linux-gkeop — —
linux-gkeop-5.15 — 5.15.0-1040.46~20.04.1
linux-gkeop-5.4 — —
linux-hwe — —
linux-hwe-5.11 — —
linux-hwe-5.13 — —
linux-hwe-5.19 — —
linux-hwe-5.8 — —
linux-hwe-6.2 — —
linux-hwe-edge — —
linux-intel-5.13 — —
linux-lowlatency-hwe-5.19 — —
linux-lowlatency-hwe-6.2 — —
linux-nvidia-6.2 — —
linux-oem — —
linux-oem-5.10 — —
linux-oem-5.13 — —
linux-oem-5.14 — —
linux-oem-5.17 — —
linux-oem-5.6 — —
linux-oem-6.0 — —
linux-oem-6.1 — —
linux-oracle-5.0 — —
linux-oracle-5.11 — —
linux-oracle-5.13 — —
linux-oracle-5.3 — —
linux-oracle-5.8 — —
linux-raspi-realtime — —
linux-raspi2 — —
linux-realtime — —
linux-riscv — —
linux-riscv-5.11 — —
linux-riscv-5.19 — —
linux-riscv-5.8 — —
linux-starfive-5.19 — —
linux-starfive-6.2 — —

Exploit Protection

Are you running linux-allwinner-5.19?

UBUNTU-CVE-2023-52442 carries CVSS 9.1 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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