Is CVE-2026-46307 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-46307 being exploited in the wild.

How severe is CVE-2026-46307?

Informational severity, with a CVSS score of 2.1, published 8 June 2026.

Which products and versions are affected?

Linux Linux kernel ath5k driver.

Is there a fix for CVE-2026-46307?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-46307 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-46307?

Check whether you run Linux Foundation Linux kernel (ath5k driver). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-46307: Linux Kernel out-of-bounds write in ath5k Wi-Fi driver

CVE-2026-46307 · Severity: info · CVSS 2.1 · Published 2026-06-08

A vulnerability was identified in the Linux kernel's ath5k Wi-Fi driver where the system incorrectly writes data outside of its intended memory boundaries. This occurs during wireless transmission tasks and results in a minor memory overwrite. While the practical impact is considered negligible, it represents a technical flaw in how the driver handles wireless data rates.

Vendors: Linux Foundation.

Quick answers

Is CVE-2026-46307 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-46307 being exploited in the wild.
How severe is CVE-2026-46307?: Informational severity, with a CVSS score of 2.1, published 8 June 2026.
Which products and versions are affected?: Linux Linux kernel ath5k driver.
Is there a fix for CVE-2026-46307?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-46307 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-46307?: Check whether you run Linux Foundation Linux kernel (ath5k driver). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An array-index-out-of-bounds access exists in the ath5k driver within 'drivers/net/wireless/ath/ath5k/base.c'. The vulnerability occurs in the 'ath5k_tx_frame_completed' function when the driver attempts to set a sentinel value (idx = -1) at an index calculated as 'ts->ts_final_idx + 1'. On certain hardware like the 5212, 'ts_final_idx' can be 3, causing an access at index 4 of an array with a maximum size of 4 (IEEE80211_TX_MAX_RATES). This results in an out-of-bounds write that overwrites the adjacent 'ack_signal' member in the 'info->status' structure. The fix introduces a bounds check to ensure the index is within the array limits before writing.

Affected products

Linux Linux kernel ath5k driver

Timeline

2025-12-09: disclosed: Vulnerability reported and patch authored
2026-06-08: advisory: CVE published in NVD dataset

References

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