Critical Alert 1 Active Exploit Detected Today

CVE-2026-7273 Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability →
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CVE-2026-90367NVD

Vulnerability Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER

mt7996_mac_reset_work() parked the tx worker and disabled the RX/TX NAPIs
before taking dev->mt76.mutex. mt76_worker_disable()/_enable() are plain
kthread park/unpark, not refcounted, and __mt76_set_channel() toggles the
same worker and the MT76_RESET bit under the mutex. An L1 SER racing a
channel switch could therefore have the worker unparked and MT76_RESET
cleared while the reset path resets the DMA rings, corrupting descriptors
or tokens. Take the mutex before disabling the worker, as mt7915 does.
Severity Level
HIGH(8.8)
Published Date
Sep 17, 2026
Last Modified
Sep 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.24%Probability
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics — Score 8.8 (HIGH)
Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Linux Linux >= 27015b6fbcca836c6dbf196afc266e068af4aeec and < 906ad486ba5c4933d82e1ebe0685656390a48450
  • Linux Linux >= 27015b6fbcca836c6dbf196afc266e068af4aeec and < 594c4b7f89f9ea75dc9c50b5e4c4296db4a3d701
  • Linux Linux >= 27015b6fbcca836c6dbf196afc266e068af4aeec and < 6190db312b8230813f529f014b26247c6d9800d0
  • Linux Linux >= 6.4
Patched Versions
  • Linux Linux 906ad486ba5c4933d82e1ebe0685656390a48450
  • Linux Linux 594c4b7f89f9ea75dc9c50b5e4c4296db4a3d701
  • Linux Linux 6190db312b8230813f529f014b26247c6d9800d0
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