🛡️ CVE-2023-4134 on Ubuntu — linux
Description
A use-after-free vulnerability was found in the cyttsp4_core driver in the Linux kernel. This issue occurs in the device cleanup routine due to a possible rearming of the watchdog_timer from the workqueue. This could allow a local user to crash the system, causing a denial of service.
Distribution advisory
This page covers CVE-2023-4134 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-100.110; 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 none, integrity none, 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:N/I:N/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: None.
- Integrity impact: None.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
UBUNTU-CVE-2023-4134 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-2023-4134 is recorded against 106 packages.
- linux (fixed in 5.15.0-100.110)
- linux-allwinner-5.19
- linux-aws (fixed in 5.15.0-1056.61)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1056.61~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4
- linux-aws-5.8
- linux-aws-6.2 (fixed in 6.2.0-1015.15~22.04.1)
- linux-aws-fips (fixed in 5.15.0-1056.61+fips1)
- linux-aws-hwe
- linux-azure (fixed in 5.15.0-1058.66)
- linux-azure-4.15
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1058.66~20.04.2)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.4
- linux-azure-5.8
- linux-azure-6.2 (fixed in 6.2.0-1016.16~22.04.1)
Show the remaining 82 packages
- linux-azure-edge
- linux-azure-fde (fixed in 5.15.0-1058.66.1)
- linux-azure-fde-5.19
- linux-azure-fde-6.2 (fixed in 6.2.0-1016.16~22.04.1.1)
- linux-azure-fips
- linux-bluefield
- linux-fips (fixed in 5.15.0-100.110+fips1)
- linux-gcp (fixed in 5.15.0-1053.61)
- linux-gcp-4.15
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1053.61~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4
- linux-gcp-5.8
- linux-gcp-6.2 (fixed in 6.2.0-1018.20~22.04.1)
- linux-gcp-fips (fixed in 5.15.0-1055.63+fips2)
- linux-gke (fixed in 5.15.0-1052.57)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 5.15.0-1038.44)
- linux-gkeop-5.15 (fixed in 5.15.0-1038.44~20.04.1)
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-100.110~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4
- linux-hwe-5.8
- linux-hwe-6.2 (fixed in 6.2.0-36.37~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 5.15.0-1048.51)
- linux-ibm-5.15 (fixed in 5.15.0-1048.51~20.04.1)
- linux-ibm-5.4
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1048.50)
- linux-intel-iotg (fixed in 5.15.0-1050.56)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1050.56~20.04.1)
- linux-iot
- linux-kvm (fixed in 5.15.0-1052.57)
- linux-lowlatency (fixed in 5.15.0-100.110)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-100.110~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2 (fixed in 6.2.0-1016.16~22.04.1)
- linux-lts-xenial
- linux-nvidia (fixed in 5.15.0-1046.46)
- linux-nvidia-6.2 (fixed in 6.2.0-1011.11)
- linux-nvidia-tegra (fixed in 5.15.0-1025.25)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1025.25~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1012.12)
- 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 (fixed in 5.15.0-1053.59)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1053.59~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4
- linux-oracle-5.8
- linux-raspi (fixed in 5.15.0-1048.51)
- linux-raspi-5.4
- linux-raspi-realtime
- linux-raspi2
- linux-realtime (fixed in 5.15.0-1056.63)
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1051.55~20.04.1)
- 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)
- linux-xilinx-zynqmp (fixed in 5.15.0-1030.34)
Timeline and source
Published on 4 August 2023 and last revised on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
git.kernel.org (Report)
lore.kernel.org (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)
www.cve.org (Report)
Other advisories for this package
linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
- CVE-2026-35233 (4.4 Medium, published 1 May 2026)
- CVE-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
- CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
- CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
- CGA-g2p8-xhwc-x7hp (published 7 Jan 2026)
- CGA-w3j3-57xg-5mm7 (published 7 Jan 2026)
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-2022-50492 (7.8 High, published 4 Oct 2025)
- CVE-2022-50488 (7.8 High, published 4 Oct 2025)
- CVE-2022-50507 (7.8 High, published 4 Oct 2025)
- CVE-2022-50496 (7.8 High, published 4 Oct 2025)
- CVE-2022-50422 (7.8 High, published 1 Oct 2025)
CVE-2023-4134 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:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.15.0-100.110 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 5.15.0-1056.61 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1056.61~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | 6.2.0-1015.15~22.04.1 |
| linux-aws-fips | — | 5.15.0-1056.61+fips1 |
| linux-aws-hwe | — | — |
| linux-azure | — | 5.15.0-1058.66 |
| linux-azure-4.15 | — | — |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1058.66~20.04.2 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | 6.2.0-1016.16~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1058.66.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | 6.2.0-1016.16~22.04.1.1 |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-fips | — | 5.15.0-100.110+fips1 |
| linux-gcp | — | 5.15.0-1053.61 |
| linux-gcp-4.15 | — | — |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1053.61~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | 6.2.0-1018.20~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1055.63+fips2 |
| linux-gke | — | 5.15.0-1052.57 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1038.44 |
| linux-gkeop-5.15 | — | 5.15.0-1038.44~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-100.110~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | 6.2.0-36.37~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1048.51 |
| linux-ibm-5.15 | — | 5.15.0-1048.51~20.04.1 |
| linux-ibm-5.4 | — | — |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1048.50 |
| linux-intel-iotg | — | 5.15.0-1050.56 |
| linux-intel-iotg-5.15 | — | 5.15.0-1050.56~20.04.1 |
| linux-iot | — | — |
| linux-kvm | — | 5.15.0-1052.57 |
| linux-lowlatency | — | 5.15.0-100.110 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-100.110~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | 6.2.0-1016.16~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 5.15.0-1046.46 |
| linux-nvidia-6.2 | — | 6.2.0-1011.11 |
| linux-nvidia-tegra | — | 5.15.0-1025.25 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1025.25~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1012.12 |
| 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 | — | 5.15.0-1053.59 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1053.59~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | — |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.15.0-1048.51 |
| linux-raspi-5.4 | — | — |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1056.63 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1051.55~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | 6.2.0-1009.10~22.04.1 |
| linux-xilinx-zynqmp | — | 5.15.0-1030.34 |
References
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