wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
Summary
| CVE | CVE-2026-74410 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 06:22:43 UTC |
| Updated | 2026-08-17 06:19:36 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer In rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit descriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both firmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478), causing an out-of-bounds read from the pre-allocated DMA buffer when skb_put_data copies new_len bytes. The USB transport already validates this (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the PCIe path does not. Add a check that new_len does not exceed the DMA buffer size. |
Risk And Classification
Primary CVSS: v3.1 8.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS: 0.002780000 probability, percentile 0.202770000 (date 2026-08-17)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 8.1 | HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | CNA | DECLARED | 8.1 | HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
AdjacentAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 913bd7d3d3d842b5c1d2b908a0201efa8fc79793 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 45abc14ab3f15da7d689f1a8809c1a01240a94d9 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 08193e733e5d4790e6c937af86d78793b02709be git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 6a3c384393d3f0b41669ed5a2e88744aad9d87c8 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 26c183a86ea4dd1f2ff90c6f783649e7f5722a10 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 01155ded5d4dad61840a9a3c33ab56778ef1f100 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 1554fa522f16ec7c5c342ad33fe734eeb6eb2452 git | Not specified |
| CNA | Linux | Linux | affected e3037485c68ec1a299ff41160d8fedbd4abc29b9 6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6 git | Not specified |
| CNA | Linux | Linux | affected 5.2 | Not specified |
| CNA | Linux | Linux | unaffected 5.2 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.261 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.212 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/913bd7d3d3d842b5c1d2b908a0201efa8fc79793 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/01155ded5d4dad61840a9a3c33ab56778ef1f100 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6e76e9ed273dfb4b3333a5ebbb94958cc5752ab6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/26c183a86ea4dd1f2ff90c6f783649e7f5722a10 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/45abc14ab3f15da7d689f1a8809c1a01240a94d9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6a3c384393d3f0b41669ed5a2e88744aad9d87c8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/08193e733e5d4790e6c937af86d78793b02709be | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1554fa522f16ec7c5c342ad33fe734eeb6eb2452 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.