CVE-2022-49503 ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
An out-of-bounds access in the ath9k_htc driver allows attackers to cause denial of service or potentially execute code via crafted wireless packets.
- 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-2022-49503?
CVE-2022-49503 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. 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:
ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
The "rxstatus->rs_keyix" eventually gets passed to test_bit() so we need to ensure that it is within the bitmap.
drivers/net/wireless/ath/ath9k/common.c:46 ath9k_cmn_rx_accept() error: passing untrusted data 'rx_stats->rs_keyix' to 'test_bit()'
Weakness: CWE-125
Which versions are affected by CVE-2022-49503?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49503?
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-2022-49503 being exploited?
There is no known exploitation of CVE-2022-49503 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49503, GHSA-w72r-9wq7-mqwh, UBUNTU-CVE-2022-49503.