CVE-2024-53055: wifi: iwlwifi: mvm: fix 6 GHz scan construction
First published: Tue Nov 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix 6 GHz scan construction If more than 255 colocated APs exist for the set of all APs found during 2.4/5 GHz scanning, then the 6 GHz scan construction will loop forever since the loop variable has type u8, which can never reach the number found when that's bigger than 255, and is stored in a u32 variable. Also move it into the loops to have a smaller scope. Using a u32 there is fine, we limit the number of APs in the scan list and each has a limit on the number of RNR entries due to the frame size. With a limit of 1000 scan results, a frame size upper bound of 4096 (really it's more like ~2300) and a TBTT entry size of at least 11, we get an upper bound for the number of ~372k, well in the bounds of a u32.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.11<5.15.171 | |
| Linux Kernel | >=5.16<6.1.116 | |
| Linux Kernel | >=6.2<6.6.60 | |
| Linux Kernel | >=6.7<6.11.7 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/2ac15e5a8f42fed5d90ed9e1197600913678c50f
- https://git.kernel.org/stable/c/cde8a7eb5c6762264ff0f4433358e0a0d250c875
- https://git.kernel.org/stable/c/fc621e7a043de346c33bd7ae7e2e0c651d6152ef
- https://git.kernel.org/stable/c/2ccd5badadab2d586e91546bf5af3deda07fef1f
- https://git.kernel.org/stable/c/7245012f0f496162dd95d888ed2ceb5a35170f1a
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53055
- https://nvd.nist.gov/vuln/detail/CVE-2024-53055
- https://launchpad.net/bugs/cve/CVE-2024-53055
- https://security-tracker.debian.org/tracker/CVE-2024-53055
- https://ubuntu.com/security/CVE-2024-53055
- https://git.kernel.org/linus/7245012f0f496162dd95d888ed2ceb5a35170f1a
Frequently Asked Questions
What is the severity of CVE-2024-53055?
CVE-2024-53055 has been classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-53055?
To resolve CVE-2024-53055, it is recommended to update your Linux kernel to a version that includes the patch for this vulnerability.
What versions of the Linux kernel are affected by CVE-2024-53055?
CVE-2024-53055 affects multiple versions of the Linux kernel ranging from 5.11 up to 6.12-rc5.
What types of issues can CVE-2024-53055 cause?
CVE-2024-53055 can lead to eternal looping in the 6 GHz scan construction process if numerous colocated APs are present.
Is CVE-2024-53055 a network-related vulnerability?
Yes, CVE-2024-53055 is related to the WiFi scanning capabilities of the Linux kernel.
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