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6.8
CVE-2023-53802: Linux kernel Wi‑Fi driver may leak memory
CVE-2023-53802 · published 11 months ago
Summary
The Wi‑Fi driver used in several Canonical Linux distributions can fail to release memory when a certain function is called without a follow‑up handler. Over time this can reduce system performance or cause crashes. Update the kernel to the latest version provided by Canonical to fix the issue.
What to do
- Update canonical linux-aws-5.4 to version 5.4.0-1104.112~18.04.1.
- Update canonical linux-azure-5.4 to version 5.4.0-1110.116~18.04.1.
- Update canonical linux-gcp-5.4 to version 5.4.0-1107.116~18.04.1.
- Update canonical linux-hwe-5.4 to version 5.4.0-152.169~18.04.1.
- Update canonical linux-ibm-5.4 to version 5.4.0-1051.56~18.04.1.
- Update canonical linux-oracle-5.4 to version 5.4.0-1103.112~18.04.1.
- Update canonical linux-raspi-5.4 to version 5.4.0-1088.99~18.04.1.
- Update canonical linux to version 5.4.0-152.169.
- Update canonical linux-aws to version 5.4.0-1104.112.
- Update canonical linux-aws-5.15 to version 5.15.0-1038.43~20.04.1.
- Update canonical linux-azure to version 5.4.0-1110.116.
- Update canonical linux-azure-5.15 to version 5.15.0-1040.47~20.04.1.
- Update canonical linux-bluefield to version 5.4.0-1065.71.
- Update canonical linux-gcp to version 5.4.0-1107.116.
- Update canonical linux-gcp-5.15 to version 5.15.0-1036.44~20.04.1.
- Update canonical linux-hwe-5.15 to version 5.15.0-75.82~20.04.1.
- Update canonical linux-ibm to version 5.4.0-1051.56.
- Update canonical linux-intel-iotg-5.15 to version 5.15.0-1033.38~20.04.1.
- Update canonical linux-iot to version 5.4.0-1017.18.
- Update canonical linux-kvm to version 5.4.0-1093.99.
- Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-75.82~20.04.1.
- Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1015.15~20.04.1.
- Update canonical linux-oracle to version 5.4.0-1103.112.
- Update canonical linux-oracle-5.15 to version 5.15.0-1037.43~20.04.1.
- Update canonical linux-raspi to version 5.4.0-1088.99.
- Update canonical linux-riscv-5.15 to version 5.15.0-1035.39~20.04.1.
- Update canonical linux-xilinx-zynqmp to version 5.4.0-1024.28.
- Update canonical linux-aws-fips to version 5.4.0-1104.112+fips1.
- Update canonical linux-azure-fips to version 5.4.0-1110.116+fips1.
- Update canonical linux-fips to version 5.4.0-1079.88.
- Update canonical linux-gcp-fips to version 5.4.0-1107.116+fips1.
- Update canonical linux to version 5.15.0-75.82.
- Update canonical linux-aws to version 5.15.0-1038.43.
- Update canonical linux-azure to version 5.15.0-1040.47.
- Update canonical linux-gcp to version 5.15.0-1036.44.
- Update canonical linux-gke to version 5.15.0-1036.41.
- Update canonical linux-gkeop to version 5.15.0-1022.27.
- Update canonical linux-ibm to version 5.15.0-1032.35.
- Update canonical linux-intel-iotg to version 5.15.0-1033.38.
- Update canonical linux-kvm to version 5.15.0-1035.40.
- Update canonical linux-lowlatency to version 5.15.0-75.82.
- Update canonical linux-nvidia to version 5.15.0-1027.27.
- Update canonical linux-nvidia-tegra to version 5.15.0-1015.15.
- Update canonical linux-oracle to version 5.15.0-1037.43.
- Update canonical linux-raspi to version 5.15.0-1032.35.
- Update canonical linux-bluefield to version 5.15.0-1019.21.
- Update canonical linux-intel-iot-realtime to version 5.15.0-1033.35.
- Update canonical linux-realtime to version 5.15.0-1040.45.
- Update debian linux to version 6.1.20-1.
- Update canonical linux-azure-fde to version 5.15.0-1041.48.1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:Pro:14.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-lts-xenial | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws-hwe | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:Pro:FIPS:16.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws-5.4 |
< 5.4.0-1104.112~18.04.1 Fix: upgrade to 5.4.0-1104.112~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-5.4 |
< 5.4.0-1110.116~18.04.1 Fix: upgrade to 5.4.0-1110.116~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-5.4 |
< 5.4.0-1107.116~18.04.1 Fix: upgrade to 5.4.0-1107.116~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-hwe-5.4 |
< 5.4.0-152.169~18.04.1 Fix: upgrade to 5.4.0-152.169~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux-ibm-5.4 |
< 5.4.0-1051.56~18.04.1 Fix: upgrade to 5.4.0-1051.56~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle-5.4 |
< 5.4.0-1103.112~18.04.1 Fix: upgrade to 5.4.0-1103.112~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux-raspi-5.4 |
< 5.4.0-1088.99~18.04.1 Fix: upgrade to 5.4.0-1088.99~18.04.1
|
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:20.04:LTS | canonical | linux |
< 5.4.0-152.169 Fix: upgrade to 5.4.0-152.169
|
| Ubuntu:20.04:LTS | canonical | linux-aws |
< 5.4.0-1104.112 Fix: upgrade to 5.4.0-1104.112
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.15 |
< 5.15.0-1038.43~20.04.1 Fix: upgrade to 5.15.0-1038.43~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-azure |
< 5.4.0-1110.116 Fix: upgrade to 5.4.0-1110.116
|
| Ubuntu:20.04:LTS | canonical | linux-azure-5.15 |
< 5.15.0-1040.47~20.04.1 Fix: upgrade to 5.15.0-1040.47~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-bluefield |
< 5.4.0-1065.71 Fix: upgrade to 5.4.0-1065.71
|
| Ubuntu:20.04:LTS | canonical | linux-gcp |
< 5.4.0-1107.116 Fix: upgrade to 5.4.0-1107.116
|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.15 |
< 5.15.0-1036.44~20.04.1 Fix: upgrade to 5.15.0-1036.44~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.15 |
< 5.15.0-75.82~20.04.1 Fix: upgrade to 5.15.0-75.82~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-ibm |
< 5.4.0-1051.56 Fix: upgrade to 5.4.0-1051.56
|
| Ubuntu:20.04:LTS | canonical | linux-intel-iotg-5.15 |
< 5.15.0-1033.38~20.04.1 Fix: upgrade to 5.15.0-1033.38~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-iot |
< 5.4.0-1017.18 Fix: upgrade to 5.4.0-1017.18
|
| Ubuntu:20.04:LTS | canonical | linux-kvm |
< 5.4.0-1093.99 Fix: upgrade to 5.4.0-1093.99
|
| Ubuntu:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 |
< 5.15.0-75.82~20.04.1 Fix: upgrade to 5.15.0-75.82~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-nvidia-tegra-5.15 |
< 5.15.0-1015.15~20.04.1 Fix: upgrade to 5.15.0-1015.15~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oracle |
< 5.4.0-1103.112 Fix: upgrade to 5.4.0-1103.112
|
Showing 50 of 147. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.15 |
< 5.15.0-1037.43~20.04.1 Fix: upgrade to 5.15.0-1037.43~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-raspi |
< 5.4.0-1088.99 Fix: upgrade to 5.4.0-1088.99
|
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.15 |
< 5.15.0-1035.39~20.04.1 Fix: upgrade to 5.15.0-1035.39~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-xilinx-zynqmp |
< 5.4.0-1024.28 Fix: upgrade to 5.4.0-1024.28
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-aws-fips |
< 5.4.0-1104.112+fips1 Fix: upgrade to 5.4.0-1104.112+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-azure-fips |
< 5.4.0-1110.116+fips1 Fix: upgrade to 5.4.0-1110.116+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-fips |
< 5.4.0-1079.88 Fix: upgrade to 5.4.0-1079.88
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-gcp-fips |
< 5.4.0-1107.116+fips1 Fix: upgrade to 5.4.0-1107.116+fips1
|
| Ubuntu:22.04:LTS | canonical | linux |
< 5.15.0-75.82 Fix: upgrade to 5.15.0-75.82
|
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws |
< 5.15.0-1038.43 Fix: upgrade to 5.15.0-1038.43
|
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure |
< 5.15.0-1040.47 Fix: upgrade to 5.15.0-1040.47
|
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp |
< 5.15.0-1036.44 Fix: upgrade to 5.15.0-1036.44
|
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gke |
< 5.15.0-1036.41 Fix: upgrade to 5.15.0-1036.41
|
| Ubuntu:22.04:LTS | canonical | linux-gkeop |
< 5.15.0-1022.27 Fix: upgrade to 5.15.0-1022.27
|
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm |
< 5.15.0-1032.35 Fix: upgrade to 5.15.0-1032.35
|
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg |
< 5.15.0-1033.38 Fix: upgrade to 5.15.0-1033.38
|
| Ubuntu:22.04:LTS | canonical | linux-kvm |
< 5.15.0-1035.40 Fix: upgrade to 5.15.0-1035.40
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency |
< 5.15.0-75.82 Fix: upgrade to 5.15.0-75.82
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia |
< 5.15.0-1027.27 Fix: upgrade to 5.15.0-1027.27
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra |
< 5.15.0-1015.15 Fix: upgrade to 5.15.0-1015.15
|
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle |
< 5.15.0-1037.43 Fix: upgrade to 5.15.0-1037.43
|
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-raspi |
< 5.15.0-1032.35 Fix: upgrade to 5.15.0-1032.35
|
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:Nvidia-BlueField:22.04:LTS | canonical | linux-bluefield |
< 5.15.0-1019.21 Fix: upgrade to 5.15.0-1019.21
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-intel-iot-realtime |
< 5.15.0-1033.35 Fix: upgrade to 5.15.0-1033.35
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime |
< 5.15.0-1040.45 Fix: upgrade to 5.15.0-1040.45
|
| Ubuntu:24.04:LTS | canonical | linux-azure-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-lowlatency-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Debian:12 | debian | linux |
< 6.1.20-1 Fix: upgrade to 6.1.20-1
|
| Ubuntu:22.04:LTS | canonical | linux-azure-fde |
< 5.15.0-1041.48.1 Fix: upgrade to 5.15.0-1041.48.1
|
Original advisory text
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function It is stated that ath9k_htc_rx_msg() either...
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function It is stated that ath9k_htc_rx_msg() either frees the provided skb or passes its management to another callback function. However, the skb is not freed in case there is no another callback function, and Syzkaller was able to cause a memory leak. Also minor comment fix. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
- https://git.kernel.org/stable/c/564bc2222bf50eb6cdee715a5431bf4dc9f923c1 Third Party Advisory
- https://git.kernel.org/stable/c/5a84e51f72580fc70066b03f3dac38421e702a0b Third Party Advisory
- https://git.kernel.org/stable/c/68171c006c8645a3e0293a6c3e6037c6538ac1c5 Third Party Advisory
- https://ubuntu.com/security/CVE-2023-53802 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2023-53802 Third Party Advisory
- https://git.kernel.org/linus/9b25e3985477ac3f02eca5fc1e0cc6850a3f7e69 Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2023-53802 Vendor Advisory
- https://git.kernel.org/stable/c/9b25e3985477ac3f02eca5fc1e0cc6850a3f7e69 Third Party Advisory
- https://git.kernel.org/stable/c/b11f95f65cc52ee3a756e6f6a88df37a203e25bd Third Party Advisory
- https://git.kernel.org/stable/c/bbfababb4f899fe1556eac195f9774b6fe675fb6 Third Party Advisory
- https://git.kernel.org/stable/c/c0c0614f143b568cd0e9525d53cf12e5dcd11987 Third Party Advisory
- https://git.kernel.org/stable/c/ec246dfe006b2a8f36353f7489e4f525114db9a5 Third Party Advisory
Severity
6.8
Medium
Timeline
Published9 Dec 2025
Updated3 Nov 2026
First seen7 Mar 2026
Track software like this
Free during beta