What’s Vulnerable › Vulnerabilities

CVE-2024-49929: wifi: iwlwifi: mvm: avoid NULL pointer dereference

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-21 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: before 6.6.55; from 6.7 before 6.10.14; from 6.11 before 6.11.3 — fixed in 6.10.14, 6.11.3, 6.6.55

How to fix

Upgrade to a fixed version: Linux kernel 6.10.14, 6.11.3, 6.6.55. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/557a6cd847645e667f3b362560bd7e7c09aac284
• https://git.kernel.org/stable/c/6dcadb2ed3b76623ab96e3e7fbeda1a374d01c28
• https://git.kernel.org/stable/c/c0b4f5d94934c290479180868a32c15ba36a6d9e
• https://git.kernel.org/stable/c/cbc6fc9cfcde151ff5eadaefdc6155f99579384f
• https://git.kernel.org/stable/c/cdbf51bfa4b0411820806777da36d93d49bc49a1
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

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