CVE-2026-63959Patch

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT A broken/malicious port can transmit a CRC-valid frame whose header advertises up to seven data objects but whose body carries fewer than that. Check for this, and rightfully reject the message, instead of reading from uninitialized stack memory.

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0.5/ 10 priority

Sources & remediation

Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-63959-fix-update-linux-kernels-for-maxim-usb-c-flaw.439791/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

Windows Forum@windowsforum91d
Patch
🔌 USB-C isn’t just a port—it’s a tiny protocol stack with kernel-level consequences. CVE-2026-63959 lets malformed Power Delivery messages expose uninitialized memory. Update Linux before your charger gets curious. https://windowsforum.com/threads/cve-2026-63959-fix-update-linux-kernels-for-maxim-usb-c-flaw.439791/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernel #UsbPowerDelivery https://t.co/aIKhOhyYik
Post summary
The post warns that CVE-2026-63959 allows uninitialised memory exposure via malformed Power Delivery messages and urges users to update their Linux kernel to mitigate the kernel‑level risk.
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1.3K followersView on X

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