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CVE-2022-50829

UnknownEPSS 0.24%

Last modified

CVE-2022-50829 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb() It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb() It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. Moreover, if alloc_skb() fails, urb->context becomes NULL but rx_buf is not freed and there can be a memory leak. The patch removes unnecessary nskb and makes skb processing more clear: it is supposed that ath9k_htc_rx_msg() either frees old skb or passes its managing to another callback function. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Metrics

EPSS Probability
0.24%

14.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 3deff76095c4ac4252e27c537db3041f619c23a2, < 5e8751a977a49a6e00cce1a8da5ca16da83f9c8c; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < f127c2b4c967025e5c3a4ce7e13b79135d46a33d; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 0c8dd2ea4b419da96ab4953e4967e9363e2f8a4f; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 988bd27de2484faf17afe0408db2e3d9e5ac61fc; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 98d9172822dc6f38138333941984bd759a89d419; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 355f16f756aad0c95cdaa0c14a34ab4137d32815; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 53b9bb1a00c4285ee7f58a11129dbea015db61bc; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < 71fc0ad671a62c494d2aec731baeabd3bfe6c95d; >= 3deff76095c4ac4252e27c537db3041f619c23a2, < dd95f2239fc846795fc926787c3ae0ca701c9840
LinuxLinux3.0

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2022-50829?
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb() It is possible that skb is freed in ath9k_htc_rx_msg(), then usb_submit_urb() fails and we try to free skb again. It causes use-after-free bug. Moreover, if alloc_skb() fails, urb->context becomes NULL but rx_buf is not freed and there can be a memory leak. The patch removes unnecessary nskb and makes skb processing more clear: it is supposed that ath9k_htc_rx_msg() either frees old skb or passes its managing to another callback function. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
How severe is CVE-2022-50829?
Severity scoring for CVE-2022-50829 is pending analysis. The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50829?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST