{"id":"CVE-2026-74410","summary":"wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer\n\nIn rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit\ndescriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both\nfirmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478),\ncausing an out-of-bounds read from the pre-allocated DMA buffer when\nskb_put_data copies new_len bytes. The USB transport already validates\nthis (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the\nPCIe path does not.\n\nAdd a check that new_len does not exceed the DMA buffer size.","modified":"2026-08-16T03:48:35.164810922Z","published":"2026-08-15T05:59:18.039Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74410.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01155ded5d4dad61840a9a3c33ab56778ef1f100"},{"type":"WEB","url":"https://git.kernel.org/stable/c/08193e733e5d4790e6c937af86d78793b02709be"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1554fa522f16ec7c5c342ad33fe734eeb6eb2452"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26c183a86ea4dd1f2ff90c6f783649e7f5722a10"},{"type":"WEB","url":"https://git.kernel.org/stable/c/45abc14ab3f15da7d689f1a8809c1a01240a94d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6a3c384393d3f0b41669ed5a2e88744aad9d87c8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/913bd7d3d3d842b5c1d2b908a0201efa8fc79793"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74410.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74410"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e3037485c68ec1a299ff41160d8fedbd4abc29b9"},{"fixed":"913bd7d3d3d842b5c1d2b908a0201efa8fc79793"},{"fixed":"45abc14ab3f15da7d689f1a8809c1a01240a94d9"},{"fixed":"08193e733e5d4790e6c937af86d78793b02709be"},{"fixed":"6a3c384393d3f0b41669ed5a2e88744aad9d87c8"},{"fixed":"26c183a86ea4dd1f2ff90c6f783649e7f5722a10"},{"fixed":"01155ded5d4dad61840a9a3c33ab56778ef1f100"},{"fixed":"1554fa522f16ec7c5c342ad33fe734eeb6eb2452"},{"fixed":"6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74410.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.2.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74410.json"}}],"schema_version":"1.9.0"}