CVE-2026-74409— wifi: rtw89: add bounds check on firmware mac_id in link lookup
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 144c6cd24b3556e6e7a14271cee57a42ebf97450< ad445de67359f24088d4305c05fbd7e34c4e35e3 | affected |
144c6cd24b3556e6e7a14271cee57a42ebf97450< 920101305e7601a33b9e01019f4ca526af2526ae | affected | ||
144c6cd24b3556e6e7a14271cee57a42ebf97450< 6d88244bb129755acca696f9227200f4a2d106a6 | affected | ||
6.14 | affected | ||
< 6.14 | unaffected | ||
6.18.40≤ 6.18.* | unaffected | ||
7.1.5≤ 7.1.* | unaffected | ||
7.2≤ * | unaffected |
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I. Basic Information for CVE-2026-74409
Vulnerability Information
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Vulnerability Title
wifi: rtw89: add bounds check on firmware mac_id in link lookup
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: add bounds check on firmware mac_id in link lookup The mac_id field in RX descriptors is 8 bits wide (0-255), but assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries. While the driver currently assigns mac_id values below 128, the descriptor value comes from firmware and is not validated before use as an array index. Add a defensive bounds check in rtw89_assoc_link_rcu_dereference() to guard against out-of-range firmware values.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.14版本存在安全漏洞，该漏洞源于固件mac_id字段未经验证便用作数组索引，可能导致越界访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-74409
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-74409 (3)
Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total
| CVE-2026-74280 | 10.0 CRITICAL | crypto: marvell/octeontx - fix DMA cleanup using wrong loop index |
| CVE-2026-74279 | 10.0 CRITICAL | crypto: cavium/cpt - fix DMA cleanup using wrong loop index |
| CVE-2026-72407 | 10.0 CRITICAL | geneve: validate inner network offset in geneve_gro_complete() |
| CVE-2026-72408 | 10.0 CRITICAL | geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint |
| CVE-2026-74475 | 10.0 CRITICAL | vxlan: use neigh_ha_snapshot() in route_shortcircuit() |
| CVE-2026-74309 | 10.0 CRITICAL | vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler |
| CVE-2026-72421 | 10.0 CRITICAL | ipv4: fib: Don't ignore error route in local/main tables. |
| CVE-2026-72493 | 9.9 CRITICAL | net: serialize netif_running() check in enqueue_to_backlog() |
| CVE-2026-72466 | 9.8 CRITICAL | xprtrdma: Fix bcall rep leak and unbounded peek |
| CVE-2026-72248 | 9.8 CRITICAL | netfilter: flowtable: support IPIP tunnel with direct xmit |
| CVE-2026-72381 | 9.8 CRITICAL | ksmbd: fix use-after-free of fp->owner.name in durable handle owner check |
| CVE-2026-72477 | 9.8 CRITICAL | fs/ntfs3: call _ntfs_bad_inode() when failing to rename |
| CVE-2026-74406 | 9.8 CRITICAL | vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive(). |
| CVE-2026-72473 | 9.8 CRITICAL | xprtrdma: Decouple req recycling from RPC completion |
| CVE-2026-72130 | 9.8 CRITICAL | nvmet-auth: reject short AUTH_RECEIVE buffers |
| CVE-2026-72451 | 9.8 CRITICAL | xfrm: Fix xfrm state cache insertion race |
| CVE-2026-74376 | 9.8 CRITICAL | md/raid10: reset read_slot when reusing r10bio for discard |
| CVE-2026-72226 | 9.8 CRITICAL | batman-adv: tt: prevent TVLV OOB check overflow |
| CVE-2026-74401 | 9.8 CRITICAL | dlm: fix add msg handle in send_queue ordered |
| CVE-2026-72129 | 9.8 CRITICAL | nvmet-rdma: handle inline data with a nonzero offset |
Showing top 20 of 846 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2026-74409
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