Detections
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CVE-2024-49938
medium
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit Syzbot points out that skb_trim() has a sanity check on the existing length of the skb, which can be uninitialised in some error paths. The intent here is clearly just to reset the length to zero before resubmitting, so switch to calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length() already contains a call to skb_reset_tail_pointer(), so remove the redundant call. The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.
References
https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb
https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d
https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77
https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f
https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f
https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179
https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4
https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95
https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b