{"id":"CVE-2026-74410","aliases":[],"url":"https://o3.security/vulnerability/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.","published":"2026-08-15T05:59:18.039Z","modified":"2026-08-18T03:56:47.859729556Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.261"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:47.859729556Z"}}