CVE-2024-26825

MEDIUM
Published Apr 17, 2024 Modified Mar 27, 2025 CWE-459

Description

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: free rx_data_reassembly skb on NCI device cleanup rx_data_reassembly skb is stored during NCI data exchange for processing fragmented packets. It is dropped only when the last fragment is processed or when an NTF packet with NCI_OP_RF_DEACTIVATE_NTF opcode is received. However, the NCI device may be deallocated before that which leads to skb leak. As by design the rx_data_reassembly skb is bound to the NCI device and nothing prevents the device to be freed before the skb is processed in some way and cleaned, free it on the NCI device cleanup. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-459 CWE-459

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
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/16d3f507b0fa70453dc54550df093d6e9ac630c1 https://git.kernel.org/stable/c/2f6d16f0520d6505241629ee2f5c131b547d5f9d https://git.kernel.org/stable/c/471c9ede8061357b43a116fa692e70d91941ac23 https://git.kernel.org/stable/c/5c0c5ffaed73cbae6c317374dc32ba6cacc60895 https://git.kernel.org/stable/c/71349abe3aba7fedcab5b3fcd7aa82371fb5ccbf https://git.kernel.org/stable/c/7e9a8498658b398bf11b8e388005fa54e40aed81 https://git.kernel.org/stable/c/a3d90fb5c23f29ba59c04005ae76c5228cef2be9 https://git.kernel.org/stable/c/bfb007aebe6bff451f7f3a4be19f4f286d0d5d9c https://git.kernel.org/stable/c/16d3f507b0fa70453dc54550df093d6e9ac630c1 https://git.kernel.org/stable/c/2f6d16f0520d6505241629ee2f5c131b547d5f9d https://git.kernel.org/stable/c/471c9ede8061357b43a116fa692e70d91941ac23 https://git.kernel.org/stable/c/5c0c5ffaed73cbae6c317374dc32ba6cacc60895 https://git.kernel.org/stable/c/71349abe3aba7fedcab5b3fcd7aa82371fb5ccbf https://git.kernel.org/stable/c/7e9a8498658b398bf11b8e388005fa54e40aed81 https://git.kernel.org/stable/c/a3d90fb5c23f29ba59c04005ae76c5228cef2be9 https://git.kernel.org/stable/c/bfb007aebe6bff451f7f3a4be19f4f286d0d5d9c

Frequently Asked Questions

What is CVE-2024-26825? +
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: free rx_data_reassembly skb on NCI device cleanup rx_data_reassembly skb is stored during NCI data exchange for processing fragmented packets. It is dropped only when the last fragment is processed or when an NTF packet with NCI_OP_RF_DEACTIVATE_NTF opcode is received. However, the NCI device may be deallocated before that which leads to skb leak. As by design the rx_data_reassembly skb is bound to the NCI device and nothing prevents the device to be freed before the skb is processed in some way and cleaned, free it on the NCI device cleanup. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26825? +
CVE-2024-26825 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26825? +
CVE-2024-26825 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26825? +
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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