CVE-2024-43842 wifi: rtw89: Fix array index mistake in rtw89_sta_info_get_iter()
An array index mistake in the rtw89 WiFi driver allows out-of-bounds access, potentially causing crashes or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-43842?
CVE-2024-43842 is a high-severity memory corruption vulnerability in Linux kernel, published on 17 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: Fix array index mistake in rtw89_sta_info_get_iter()
In rtw89_sta_info_get_iter() 'status->he_gi' is compared to array size. But then 'rate->he_gi' is used as array index instead of 'status->he_gi'. This can lead to go beyond array boundaries in case of 'rate->he_gi' is not equal to 'status->he_gi' and is bigger than array size. Looks like "copy-paste" mistake.
Fix this mistake by replacing 'rate->he_gi' with 'status->he_gi'.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Weakness: CWE-129
Which versions are affected by CVE-2024-43842?
It affects 1 product.
Linux distribution packages (37)
bpftool AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-abi-stablelists AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-core AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-cross-headers AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-debug AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-debug-core AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-debug-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-debug-modules AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-debug-modules-extra AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-doc AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-headers AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-modules AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-modules-extra AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-rt AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-core AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-debug AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-debug-core AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-debug-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-debug-modules AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-debug-modules-extra AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-modules AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-rt-modules-extra AlmaLinux:8 | All versions | 4.18.0-553.54.1.rt7.395.el8_10 |
kernel-tools AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-tools-libs AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-tools-libs-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-zfcpdump AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-zfcpdump-core AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-zfcpdump-devel AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-zfcpdump-modules AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel-zfcpdump-modules-extra AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
perf AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
python3-perf AlmaLinux:8 | All versions | 4.18.0-553.54.1.el8_10 |
kernel Rocky Linux:8 | All versions | 0:4.18.0-553.54.1.el8_10 |
kernel-rt Rocky Linux:8 | All versions | 0:4.18.0-553.54.1.rt7.395.el8_10 |
Products include Linux kernel.
How do I fix CVE-2024-43842?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-43842 being exploited?
There is no known exploitation of CVE-2024-43842 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as ALSA-2025:8246, ALSA-2025:8247, BELL-CVE-2024-43842, DEBIAN-CVE-2024-43842, GHSA-frrf-pwhq-w5pw, RLSA-2025:8246 and 3 more.