CVE-2024-26748

HIGH
Published Apr 3, 2024 Modified Jan 14, 2025 CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fix memory double free when handle zero packet 829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again. Log: [ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3] Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver.

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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-415 CWE-415

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/1e204a8e9eb514e22a6567fb340ebb47df3f3a48 https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8 https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3 https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019 https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3 https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7 https://git.kernel.org/stable/c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48 https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8 https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3 https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019 https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3 https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7

Frequently Asked Questions

What is CVE-2024-26748? +
In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fix memory double free when handle zero packet 829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again. Log: [ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3] Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2024-26748? +
CVE-2024-26748 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-2024-26748? +
CVE-2024-26748 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-2024-26748? +
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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