Description

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.

Classification

CVE ID: CVE-2024-35915

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.08% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://git.kernel.org/stable/c/11387b2effbb55f58dc2111ef4b4b896f2756240
https://git.kernel.org/stable/c/03fe259649a551d336a7f20919b641ea100e3fff
https://git.kernel.org/stable/c/755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c
https://git.kernel.org/stable/c/ac68d9fa09e410fa3ed20fb721d56aa558695e16
https://git.kernel.org/stable/c/b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7
https://git.kernel.org/stable/c/a946ebee45b09294c8b0b0e77410b763c4d2817a
https://git.kernel.org/stable/c/8948e30de81faee87eeee01ef42a1f6008f5a83a
https://git.kernel.org/stable/c/d24b03535e5eb82e025219c2f632b485409c898f

Timeline