CVE-2024-49929: wifi: iwlwifi: mvm: avoid NULL pointer dereference
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: avoid NULL pointer dereference iwl_mvm_tx_skb_sta() and iwl_mvm_tx_mpdu() verify that the mvmvsta pointer is not NULL. It retrieves this pointer using iwl_mvm_sta_from_mac80211, which is dereferencing the ieee80211_sta pointer. If sta is NULL, iwl_mvm_sta_from_mac80211 will dereference a NULL pointer. Fix this by checking the sta pointer before retrieving the mvmsta from it. If sta is not NULL, then mvmsta isn't either.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | <6.6.55 | |
| Linux kernel | >=6.7<6.10.14 | |
| Linux kernel | >=6.11<6.11.3 | |
| Linux Kernel | <6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.234-1 | 6.1.129-1 6.1.135-1 6.12.25-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/cbc6fc9cfcde151ff5eadaefdc6155f99579384f
- https://git.kernel.org/stable/c/6dcadb2ed3b76623ab96e3e7fbeda1a374d01c28
- https://git.kernel.org/stable/c/cdbf51bfa4b0411820806777da36d93d49bc49a1
- https://git.kernel.org/stable/c/c0b4f5d94934c290479180868a32c15ba36a6d9e
- https://git.kernel.org/stable/c/557a6cd847645e667f3b362560bd7e7c09aac284
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49929
- https://nvd.nist.gov/vuln/detail/CVE-2024-49929
- https://launchpad.net/bugs/cve/CVE-2024-49929
- https://security-tracker.debian.org/tracker/CVE-2024-49929
- https://ubuntu.com/security/CVE-2024-49929
- https://git.kernel.org/linus/557a6cd847645e667f3b362560bd7e7c09aac284
Frequently Asked Questions
What is the severity of CVE-2024-49929?
The severity of CVE-2024-49929 is considered to be of medium impact due to potential NULL pointer dereference in the Linux kernel.
How do I fix CVE-2024-49929?
To fix CVE-2024-49929, you should update your Linux kernel to version 6.6.55 or higher, or apply the relevant patches if applicable.
Which versions of the Linux kernel are affected by CVE-2024-49929?
CVE-2024-49929 affects Linux kernel versions between 6.7 and 6.10.14, and also up to 6.11.3.
What components are involved in CVE-2024-49929?
CVE-2024-49929 involves the wifi driver, specifically the iwlwifi module in the Linux kernel.
Is CVE-2024-49929 fixed in the latest kernel releases?
Yes, CVE-2024-49929 has been resolved in the latest Linux kernel versions and through specific package updates.
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