Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: cdns3 fix use-after-free at workaround 2 BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac cdns3_wa2_remove_old_request() { ... kfree(priv_req->request.buf); cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ^^^ use after free ... } cdns3_gadget_ep_free_request() free the space pointed by priv_req, but priv_req is used in the following list_del_init(). This patch move list_del_init() before cdns3_gadget_ep_free_request().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.3, < 5.4.211 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03dPatch
- https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472Patch
- https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfdPatch
- https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9aPatch
- https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40Patch
FAQ
What is CVE-2022-50034?
CVE-2022-50034 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: usb: cdns3 fix use-after-free at workaround 2 BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac cdns3_wa2_remo...
How severe is CVE-2022-50034?
CVE-2022-50034 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-50034?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.