CVE-2023-53199
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails Syzkaller detected a…
Impact
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails Syzkaller detected a memory leak of skbs in ath9k_hif_usb_rx_stream(). While processing skbs in ath9k_hif_usb_rx_stream(), the already allocated skbs in skb_pool are not freed if ath9k_hif_usb_rx_stream() fails. If we have an incorrect pkt_len or pkt_tag, the input skb is considered invalid and dropped. All the associated packets already in skb_pool should be dropped and freed. Added a comment describing this issue. The patch also makes remain_skb NULL after being processed so that it cannot be referenced after potential free. The initialization of hif_dev fields which are associated with remain_skb (rx_remain_len, rx_transfer_len and rx_pad_len) is moved after a new remain_skb is allocated. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 2.6.38 before 4.19.276 from 4.20 before 5.4.235 from 5.5 before 5.10.173 from 5.11 before 5.15.99 from 5.16 before 6.1.16 from 6.2 before 6.2.3 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/0af54343a76263a12dbae7fafb64eb47c4a6ad38
- https://git.kernel.org/stable/c/3fc6401fafde11712a83089fa2cc874cfd10e2cd
- https://git.kernel.org/stable/c/61490d2710277e8a55009b7682456ae22f8087cf
- https://git.kernel.org/stable/c/9acdec72787af1bc8ed92711b52118c8e3e638a2
- https://git.kernel.org/stable/c/c766e37fccd5a5c5059be7efcd9618bf8a2c17c3
- https://git.kernel.org/stable/c/cd8316767099920a5d41feed1afab0c482a43e9f
- https://git.kernel.org/stable/c/f26dd69f61eff2eedf5df2d199bdd23108309947