nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet

Summary

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet syzbot reported the following uninit-value access issue [1][2]: nci_rx_work() parses and processes received packet. When the payload length is zero, each message type handler reads uninitialized payload and KMSAN detects this issue. The receipt of a packet with a zero-size payload is considered unexpected, and therefore, such packets should be silently discarded. This patch resolved this issue by checking payload size before calling each message type handler codes.

Timeline

1. May 19, 2024, 8:35 AM UTCCVE published
2. May 20, 2024, 5:12 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 15, 2026, 12:41 AM UTCRecord last updated

Affected versions

• Linux Linux

  From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in 11387b2effbb55f58dc2111ef4b4b896f2756240; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in 03fe259649a551d336a7f20919b641ea100e3fff; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in 755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in ac68d9fa09e410fa3ed20fb721d56aa558695e16; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in a946ebee45b09294c8b0b0e77410b763c4d2817a; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in 8948e30de81faee87eeee01ef42a1f6008f5a83a; From 6a2968aaf50c7a22fced77a5e24aa636281efca8 · fixed in d24b03535e5eb82e025219c2f632b485409c898f

• Linux Linux

  3.2

• KernelLinux

  From 3.2.0 · fixed in 4.19.312; From 4.20.0 · fixed in 5.4.274; From 5.5.0 · fixed in 5.10.215; From 5.11.0 · fixed in 5.15.154; From 5.16.0 · fixed in 6.1.85; From 6.2.0 · fixed in 6.6.26; From 6.7.0 · fixed in 6.8.5

References 8