CVE-2024-26825

nfc: nci: free rx_data_reassembly skb on NCI device cleanup

MEDIUM

5.5

CVSS Score

Published: April 17, 2024 at 09:43 AM UTC

Updated: June 17, 2026 at 07:18 AM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

3.2 ≤ v < 4.19.3073.2 ≤ v < 5.10.2103.2 ≤ v < 5.15.1493.2 ≤ v < 5.4.2693.2 ≤ v < 6.1.793.2 ≤ v < 6.6.183.2 ≤ v < 6.7.63.2 ≤ v < 6.84.20 ≤ v < 5.4.2695.11 ≤ v < 5.15.1495.16 ≤ v < 6.1.795.5 ≤ v < 5.10.2106.2 ≤ v < 6.6.186.7 ≤ v < 6.7.66.8 rc1 6.8 rc26a2968aaf50c7a22fced77a5e24aa636281efca8

Vendor states this is fixed in 16d3f507b0fa70453dc54550df093d6e9ac630c1 (fixed)

Vendor states this is fixed in 2f6d16f0520d6505241629ee2f5c131b547d5f9d (fixed)

Vendor states this is fixed in 471c9ede8061357b43a116fa692e70d91941ac23 (fixed)

Vendor states this is fixed in 5c0c5ffaed73cbae6c317374dc32ba6cacc60895 (fixed)

Vendor states this is fixed in 71349abe3aba7fedcab5b3fcd7aa82371fb5ccbf (fixed)

Vendor states this is fixed in 7e9a8498658b398bf11b8e388005fa54e40aed81 (fixed)

Vendor states this is fixed in a3d90fb5c23f29ba59c04005ae76c5228cef2be9 (fixed)

Vendor states this is fixed in bfb007aebe6bff451f7f3a4be19f4f286d0d5d9c (fixed)

Vendor states this is fixed in 3.2 (unaffected)

Vendor states this is fixed in 4.19.307 (unaffected)

Vendor states this is fixed in 5.10.210 (unaffected)

Vendor states this is fixed in 5.15.149 (unaffected)