CVE-2023-52594 wifi: ath9k: Fix potential array-index-out-of-bounds read in ath9k_htc_txstatus()
A local attacker with physical access can cause a kernel crash via an out-of-bounds read in the ath9k WiFi driver.
- 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-2023-52594?
CVE-2023-52594 is a high-severity vulnerability in Linux kernel, published on 6 Mar 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: ath9k: Fix potential array-index-out-of-bounds read in ath9k_htc_txstatus()
Fix an array-index-out-of-bounds read in ath9k_htc_txstatus(). The bug occurs when txs->cnt, data from a URB provided by a USB device, is bigger than the size of the array txs->txstatus, which is HTC_MAX_TX_STATUS. WARN_ON() already checks it, but there is no bug handling code after the check. Make the function return if that is the case.
Found by a modified version of syzkaller.
UBSAN: array-index-out-of-bounds in htc_drv_txrx.c index 13 is out of range for type '__wmi_event_txstatus [12]' Call Trace: ath9k_htc_txstatus ath9k_wmi_event_tasklet tasklet_action_common __do_softirq irq_exit_rxu sysvec_apic_timer_interrupt
Weakness: CWE-129
Which versions are affected by CVE-2023-52594?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52594?
Apply the vendor's patch.
Is CVE-2023-52594 being exploited?
There is no known exploitation of CVE-2023-52594 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52594, DEBIAN-CVE-2023-52594, GHSA-cgjr-9g5g-88j4, UBUNTU-CVE-2023-52594.