CVE-2024-49929 wifi: iwlwifi: mvm: avoid NULL pointer dereference
A NULL pointer dereference in the Linux kernel's iwlwifi driver can cause a system crash, requiring a kernel patch to prevent denial of service.
- 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-2024-49929?
CVE-2024-49929 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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: 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.
Weakness: CWE-476
Which versions are affected by CVE-2024-49929?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-49929?
Apply the vendor's patch.
Is CVE-2024-49929 being exploited?
There is no known exploitation of CVE-2024-49929 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-51419, BELL-CVE-2024-49929, DEBIAN-CVE-2024-49929, GHSA-74qf-4594-qx2m, ROOT-OS-DEBIAN-11-CVE-2024-49929, ROOT-OS-UBUNTU-2204-CVE-2024-49929 and 1 more.