{"id":"CVE-2026-90221","published":"2026-09-17T17:17:17.550","lastModified":"2026-09-17T17:17:17.550","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing\n\nnci_core_init_rsp_packet_v1() and nci_core_init_rsp_packet_v2() parse\nthe CORE_INIT_RSP packet without validating that the skb contains\nenough data. A malformed response (e.g. injected via virtual_ncidev)\ncan declare a large num_supported_rf_interfaces while providing\ninsufficient data, causing reads of uninitialized slab memory. This\nis later used in nci_init_complete_req(), triggering a KMSAN\nuninit-value warning.\n\nAdd skb length checks before accessing packet fields:\n- Validate the skb has at least 1 byte for the status field.\n- Validate the skb can hold the fixed-size header before parsing.\n- In v2, bounds-check each variable-length rf_interface entry and its\n  extension parameters within the parsing loop.\n- In v1, verify the skb is large enough for both the variable-length\n  rf_interfaces array and the trailing rsp_2 structure.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2f434478771a4ebdd535033561c0590bcde39753","tags":[]},{"url":"https://git.kernel.org/stable/c/4f0483bbcdaccc9d4aee30df7351863334cecfa7","tags":[]},{"url":"https://git.kernel.org/stable/c/5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31","tags":[]},{"url":"https://git.kernel.org/stable/c/7d44b897bff84edcd4814899314d661ad4956a8e","tags":[]},{"url":"https://git.kernel.org/stable/c/baed3fdf6ed2195c56f25ae18a086b938dcd3983","tags":[]},{"url":"https://git.kernel.org/stable/c/bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e","tags":[]},{"url":"https://git.kernel.org/stable/c/d56575a2595ee1f597f39e8a1cfb67ed3501678d","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}