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ReviewHigh

CVE-2026-74548

Linux

In the Linux kernel, the following vulnerability has been resolved: forcedeth: fix UAF of txrx_stats in nv_remove nv_remove() frees the per-CPU txrx_stats before unregister_netdev(). Until unregister completes, ndo_get_stats64, the NAPI/xmit data path, and nv_close()/drain may still access txrx_stats, leading to a use-after-free. Free the stats only after unregister_netdev().

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.15
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: forcedeth: fix UAF of txrx_stats in nv_remove nv_remove() frees the per-CPU txrx_stats before unregister_netdev(). Until unregister completes, ndo_get_stats64, the NAPI/xmit data path, and nv_close()/drain may still access txrx_stats, leading to a use-after-free. Free the stats only after unregister_netdev().

Affected product and versions

Product
Linux
Affected versions
>= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < cdf864d5d3c813ae1876f2bacc1cf3ac3c66dfc9, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < 7c22b4ee0bd003cecfc14ca28981cb213e201f70, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < d51ce7a63b76eda02cabfed1b0cc277b2f5c9bcc, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < cf2dcde2284562ff87830ca0b7fa2b06e95aef1e, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < c9d24a205fd508b9999fcab6aca4c590490a12cf, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < ae20a8a4de06a289d40b0a0633d8d573f1fcb049, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < 201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1, >= f4b633b911fd3b4cbe1dc065e8fb064078d0889d < 22666ba1420164753d7b0f5a841986b25ace5435, >= 5.3
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available