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CVE-2026-53317— wifi: mt76: mt7921: Place upper limit on station AID

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 5.12版本存在安全漏洞，该漏洞源于对工作站AID上限处理不当，可能导致固件崩溃。

AI Predicted 5.3 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 5c14a5f944b91371961548b1907802f74a4d2e5c< 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952 affected
5c14a5f944b91371961548b1907802f74a4d2e5c< 35835ff71e6e618155578b8e3905597edd5f601c affected
5c14a5f944b91371961548b1907802f74a4d2e5c< 1a4b802afe15c5b33b2dcb37a594aba2fa215d52 affected
5c14a5f944b91371961548b1907802f74a4d2e5c< 4d0bf21e3e20619d51d06c0c36207aabab8b712c affected
5.12 affected
< 5.12 unaffected
6.12.91≤ 6.12.* unaffected
6.18.33≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-53317

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7921: Place upper limit on station AID
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: Place upper limit on station AID Any station configured with an AID over 20 causes a firmware crash. This situation occurred in our testing using an AP interface on 7922 hardware, with a modified hostapd, sourced from Mediatek's OpenWRT feeds. In stock hostapd, station AIDs begin counting at 1, and this configuration is prevented with an upper limit on associated stations. However, the modified hostapd began allocation at 65, which caused the firmware to crash. This fix does not allow these AIDs to work, but will prevent the firmware crash. This crash was only seen on IFTYPE_AP interfaces, and the fix does not appear to have an effect on IFTYPE_STATION behavior.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 5.12版本存在安全漏洞，该漏洞源于对工作站AID上限处理不当，可能导致固件崩溃。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 5c14a5f944b91371961548b1907802f74a4d2e5c ~ 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952 -
Linux Linux 5.12 -

II. Public POCs for CVE-2026-53317

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III. Intelligence Information for CVE-2026-53317

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Patches & Fixes for CVE-2026-53317 (4)

Same Patch Batch · Linux · 2026-06-26 · 47 CVEs total

CVE-2026-53309 9.8 CRITICAL ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-53281 8.8 HIGH iommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-53322 8.8 HIGH vfio/pci: Clean up DMABUFs before disabling function
CVE-2026-53300 7.8 HIGH net: enetc: fix NTMP DMA use-after-free issue
CVE-2026-53290 7.8 HIGH drm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-53284 7.5 HIGH btrfs: only release the dirty pages io tree after successful writes
CVE-2026-53310 soc/tegra: cbb: Fix cross-fabric target timeout lookup
CVE-2026-53324 net: mana: Use pci_name() for debugfs directory naming
CVE-2026-53319 blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default()
CVE-2026-53321 io_uring/napi: cap busy_poll_to 10 msec
CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()
CVE-2026-53323 net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
CVE-2026-53312 iommu/riscv: Remove overflows on the invalidation path
CVE-2026-53311 fuse: fix uninit-value in fuse_dentry_revalidate()
CVE-2026-53304 scsi: sg: Resolve soft lockup issue when opening /dev/sgX
CVE-2026-53308 power: supply: max77705: Free allocated workqueue and fix removal order
CVE-2026-53307 pinctrl: pinconf-generic: Fully validate 'pinmux' property
CVE-2026-53305 usb: typec: ps883x: Fix Oops at unbind
CVE-2026-53306 tty: hvc_iucv: fix off-by-one in number of supported devices
CVE-2026-53301 reset: amlogic: t7: Fix null reset ops

Showing top 20 of 47 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53317

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