CVE-2024-26749

HIGH
Published Apr 3, 2024 Modified Jan 14, 2025 CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable() ... cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ... 'priv_req' actually free at cdns3_gadget_ep_free_request(). But list_del_init() use priv_req->list after it. [ 1542.642868][ T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4 [ 1542.642868][ T534] [ 1542.653162][ T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3): [ 1542.660311][ T534] __list_del_entry_valid+0x10/0xd4 [ 1542.665375][ T534] cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3] [ 1542.671571][ T534] usb_ep_disable+0x44/0xe4 [ 1542.675948][ T534] ffs_func_eps_disable+0x64/0xc8 [ 1542.680839][ T534] ffs_func_set_alt+0x74/0x368 [ 1542.685478][ T534] ffs_func_disable+0x18/0x28 Move list_del_init() before cdns3_gadget_ep_free_request() to resolve this problem.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/2134e9906e17b1e5284300fab547869ebacfd7d9 https://git.kernel.org/stable/c/29e42e1578a10c611b3f1a38f3229b2d664b5d16 https://git.kernel.org/stable/c/4e5c73b15d95452c1ba9c771dd013a3fbe052ff3 https://git.kernel.org/stable/c/9a07244f614bc417de527b799da779dcae780b5d https://git.kernel.org/stable/c/b40328eea93c75a5645891408010141a0159f643 https://git.kernel.org/stable/c/cd45f99034b0c8c9cb346dd0d6407a95ca3d36f6 https://git.kernel.org/stable/c/cfa9abb5570c489dabf6f7fb3a066cc576fc8824 https://git.kernel.org/stable/c/2134e9906e17b1e5284300fab547869ebacfd7d9 https://git.kernel.org/stable/c/29e42e1578a10c611b3f1a38f3229b2d664b5d16 https://git.kernel.org/stable/c/4e5c73b15d95452c1ba9c771dd013a3fbe052ff3 https://git.kernel.org/stable/c/9a07244f614bc417de527b799da779dcae780b5d https://git.kernel.org/stable/c/b40328eea93c75a5645891408010141a0159f643 https://git.kernel.org/stable/c/cd45f99034b0c8c9cb346dd0d6407a95ca3d36f6 https://git.kernel.org/stable/c/cfa9abb5570c489dabf6f7fb3a066cc576fc8824

Frequently Asked Questions

What is CVE-2024-26749? +
In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable() ... cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ... 'priv_req' actually free at cdns3_gadget_ep_free_request(). But list_del_init() use priv_req->list after it. [ 1542.642868][ T534] BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xd4 [ 1542.642868][ T534] [ 1542.653162][ T534] Use-after-free read at 0x000000009ed0ba99 (in kfence-#3): [ 1542.660311][ T534] __list_del_entry_valid+0x10/0xd4 [ 1542.665375][ T534] cdns3_gadget_ep_disable+0x1f8/0x388 [cdns3] [ 1542.671571][ T534] usb_ep_disable+0x44/0xe4 [ 1542.675948][ T534] ffs_func_eps_disable+0x64/0xc8 [ 1542.680839][ T534] ffs_func_set_alt+0x74/0x368 [ 1542.685478][ T534] ffs_func_disable+0x18/0x28 Move list_del_init() before cdns3_gadget_ep_free_request() to resolve this problem. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2024-26749? +
CVE-2024-26749 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-26749? +
CVE-2024-26749 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26749? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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