CVE-2026-43291

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: nfc: nci: Fix parameter validation for packet data

Since commit 9c328f54741b ("net: nfc: nci: Add parameter validation for packet data") communication with nci nfc chips is not working any more.

The mentioned commit tries to fix access of uninitialized data, but failed to understand that in some cases the data packet is of variable length and can therefore not be compared to the maximum packet length given by the sizeof(struct).

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8fcc7315a10a84264e55bb65ede10f0af20a983f < a24a8a582da4426b2042e510a1080df84083b51daffected
LinuxLinuxbfdda0123dde406dbff62e7e9136037e97998a15 < f5218426f765eee22e178df9c126d974792fb6a5affected
LinuxLinux0ba68bea1e356f466ad29449938bea12f5f3711f < ad058a4317db7fdb3f09caa6ed536d24a62ce6a0affected
LinuxLinux74837bca0748763a77f77db47a0bdbe63b347628 < 3b91160e9a91b5a2662875417dc42dc5b0bf03eaaffected
LinuxLinux9c328f54741bd5465ca1dc717c84c04242fac2e1 < c692db813a7e3b7c3c17d6e9a3ad2a018bf1142baffected
LinuxLinux9c328f54741bd5465ca1dc717c84c04242fac2e1 < 498fc5d0d650c77e87fcc73808d4f43240c21805affected
LinuxLinux9c328f54741bd5465ca1dc717c84c04242fac2e1 < 571dcbeb8e635182bb825ae758399831805693c2affected
LinuxLinuxc395d1e548cc68e84584ffa2e3ca9796a78bf7b9affected
LinuxLinux5.15.195 < 5.15.202affected
LinuxLinux6.1.156 < 6.1.165affected
LinuxLinux6.6.112 < 6.6.128affected
LinuxLinux6.12.53 < 6.12.75affected
LinuxLinux6.17.3 < 6.18affected
LinuxLinux6.18affected
LinuxLinux0 < 6.18unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References