🛡️ CVE-2023-5345 on Ubuntu — linux-allwinner-5.19
Description
A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.
Distribution advisory
This page covers CVE-2023-5345 as tracked by Ubuntu, for the package linux-allwinner-5.19. The fix is available in version 6.2.0-1016.16~22.04.1; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level 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 high, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: Low — an ordinary user account is enough.
- 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: High — total loss, or loss the attacker controls.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
UBUNTU-CVE-2023-5345 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.
Affected software
UBUNTU-CVE-2023-5345 is recorded against 74 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 (fixed in 6.2.0-1016.16~22.04.1)
- linux-aws-6.5 (fixed in 6.5.0-1010.10~22.04.1)
- linux-azure (fixed in 5.15.0-1054.62)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1054.62~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.8
- linux-azure-6.2 (fixed in 6.2.0-1017.17~22.04.1)
- linux-azure-6.5 (fixed in 6.5.0-1009.9~22.04.1)
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.19
- linux-azure-fde-6.2 (fixed in 6.2.0-1017.17~22.04.1.1)
- linux-azure-fde-6.8
- linux-azure-fips
Show the remaining 50 packages
- linux-bluefield
- 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 (fixed in 6.2.0-1019.21~22.04.1)
- linux-gke
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- 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 (fixed in 6.2.0-37.38~22.04.1)
- linux-hwe-edge
- linux-intel-5.13
- linux-intel-iot-realtime
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2 (fixed in 6.2.0-1017.17~22.04.1)
- linux-nvidia-6.2 (fixed in 6.2.0-1012.12)
- linux-nvidia-6.5 (fixed in 6.5.0-1007.7)
- 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 (fixed in 6.1.0-1025.25)
- linux-oem-6.5 (fixed in 6.5.0-1008.8)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.3
- linux-oracle-5.8
- linux-raspi (fixed in 6.7.0-1001.1)
- 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 (fixed in 6.2.0-1009.10~22.04.1)
Timeline and source
Published on 3 October 2023 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
git.kernel.org (Report)
kernel.dance (Report)
git.kernel.org (Report)
kernel.dance (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
www.cve.org (Report)
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:
- UBUNTU-CVE-2022-4994 (published 30 Jul 2026)
- UBUNTU-CVE-2023-20585 (published 16 Apr 2026)
- UBUNTU-CVE-2022-50812 (published 30 Dec 2025)
- UBUNTU-CVE-2022-50845 (published 30 Dec 2025)
- UBUNTU-CVE-2022-50877 (published 30 Dec 2025)
- UBUNTU-CVE-2022-50832 (published 30 Dec 2025)
- UBUNTU-CVE-2022-50864 (published 30 Dec 2025)
- UBUNTU-CVE-2022-50883 (published 30 Dec 2025)
Same weakness in other software
These advisories are the same class of weakness (CWE-416: Use After Free) in other software:
- CVE-2022-21540 (5.3 Medium, published 8 May 2026)
- CVE-2022-50552 (7.8 High, published 7 Oct 2025)
- CVE-2022-50542 (7.8 High, published 7 Oct 2025)
- CVE-2022-50507 (7.8 High, published 4 Oct 2025)
- CVE-2022-50496 (7.8 High, published 4 Oct 2025)
- CVE-2022-50492 (7.8 High, published 4 Oct 2025)
- CVE-2022-50488 (7.8 High, published 4 Oct 2025)
- CVE-2022-50433 (7.8 High, published 1 Oct 2025)
CVE-2023-5345 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 | — | 6.2.0-1016.16~22.04.1 |
| linux-aws-6.5 | — | 6.5.0-1010.10~22.04.1 |
| linux-azure | — | 5.15.0-1054.62 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1054.62~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | 6.2.0-1017.17~22.04.1 |
| linux-azure-6.5 | — | 6.5.0-1009.9~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | 6.2.0-1017.17~22.04.1.1 |
| linux-azure-fde-6.8 | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| 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 | — | 6.2.0-1019.21~22.04.1 |
| linux-gke | — | — |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| 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 | — | 6.2.0-37.38~22.04.1 |
| linux-hwe-edge | — | — |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | 6.2.0-1017.17~22.04.1 |
| linux-nvidia-6.2 | — | 6.2.0-1012.12 |
| linux-nvidia-6.5 | — | 6.5.0-1007.7 |
| 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 | — | 6.1.0-1025.25 |
| linux-oem-6.5 | — | 6.5.0-1008.8 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 6.7.0-1001.1 |
| 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 | — | 6.2.0-1009.10~22.04.1 |
References
Similar Threats
- Unknown UBUNTU-CVE-2016-20022
- Unknown UBUNTU-CVE-2020-36778
- Unknown UBUNTU-CVE-2020-36779
- Unknown UBUNTU-CVE-2020-36780
- Unknown UBUNTU-CVE-2020-36781
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