wifi: mt76: add wcid publish check in mt76_sta_add
CVE-2026-63832 · published 19 Jul 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-63832?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: c9389e3f9453ec2d710e61830eafedddfd561226 to < 720f39a9c60fdb604291c630f4f157753b376d68, 4911e4cb157cf87d5bdb3fa8e0c200032443371e to < 3c499851753a24d2e148d4e9ca51764c0c51554e, 4911e4cb157cf87d5bdb3fa8e0c200032443371e to < 55e014aaec650ede08b693ba59c8d0443f13f11c, 4911e4cb157cf87d5bdb3fa8e0c200032443371e to < 20b126920a259df4d7dcae19fcfe2c57a74d6b2e
- Linux Linux: 6.14
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: add wcid publish check in mt76_sta_add
Since mt7925_mac_sta_add publishes wcid, add publish check in mt76_sta_add
to avoid reinitializing the wcid->poll_list.
Found dev->sta_poll_list corruption when using mt7925 and 7.1-rc4.
According to the corruption information, prev->next was changed to itself.
wlan0: disconnect from AP 90:fb:5d:94:8b:e3 for new auth to 90:fb:5d:94:8b:e2
wlan0: authenticate with 90:fb:5d:94:8b:e2 (local address=84:9e:56:9c:7e:6b)
wlan0: send auth to 90:fb:5d:94:8b:e2 (try 1/3)
slab kmalloc-8k start ffff8c80958a6000 pointer offset 4160 size 8192
list_add corruption. prev->next should be next (ffff8c808a7488f8), but was ffff8c80958a7040. (prev=ffff8c80958a7040).
mt76_wcid_add_poll+0x95/0xd0 [mt76]
mt7925_mac_add_txs.part.0+0xa5/0xe0 [mt7925_common]
mt7925_rx_check+0xa7/0xc0 [mt7925_common]
mt76_dma_rx_poll+0x50d/0x790 [mt76]
mt792x_poll_rx+0x52/0xe0 [mt792x_lib]
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/720f39a9c60fdb604291c630f4f157753b376d68
- git.kernel.org/stable/c/3c499851753a24d2e148d4e9ca51764c0c51554e
- git.kernel.org/stable/c/55e014aaec650ede08b693ba59c8d0443f13f11c
- git.kernel.org/stable/c/20b126920a259df4d7dcae19fcfe2c57a74d6b2e
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON