CVE-2024-26825

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 7e9a8498658b398bf11b8e388005fa54e40aed81affected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 71349abe3aba7fedcab5b3fcd7aa82371fb5ccbfaffected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 2f6d16f0520d6505241629ee2f5c131b547d5f9daffected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 471c9ede8061357b43a116fa692e70d91941ac23affected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 5c0c5ffaed73cbae6c317374dc32ba6cacc60895affected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < 16d3f507b0fa70453dc54550df093d6e9ac630c1affected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < a3d90fb5c23f29ba59c04005ae76c5228cef2be9affected
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8 < bfb007aebe6bff451f7f3a4be19f4f286d0d5d9caffected
LinuxLinux3.2affected
LinuxLinux0 < 3.2unaffected
LinuxLinux4.19.307 <= 4.19.*unaffected
LinuxLinux5.4.269 <= 5.4.*unaffected
LinuxLinux5.10.210 <= 5.10.*unaffected
LinuxLinux5.15.149 <= 5.15.*unaffected
LinuxLinux6.1.79 <= 6.1.*unaffected
LinuxLinux6.6.18 <= 6.6.*unaffected
LinuxLinux6.7.6 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References