VulnerabilityPublished 6 May 2026Updated 6 Nov 2026

CVE-2026-43260: Linux kernel · bnxt_en: Fix RSS context delete logic

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in e123d9302d223767bd910bfbcfe607bae909f8ac : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:50 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e123d9302d223767bd910bfbcfe607bae909f8ac, 079986d6db1f8e3d50c55f400cf998ac9690d2c8, 348a5f8d06c7bdf954e13c17ad5f80b59a075604 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to e123d9302d223767bd910bfbcfe607bae909f8ac, 079986d6db1f8e3d50c55f400cf998ac9690d2c8, 348a5f8d06c7bdf954e13c17ad5f80b59a075604 or 9a9b89eea4a9cc7726702946ff688d716962fabd.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < e123d9302d223767bd910bfbcfe607bae909f8ac	Fixed in e123d9302d223767bd910bfbcfe607bae909f8ac
LinuxLinux	Affected ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 079986d6db1f8e3d50c55f400cf998ac9690d2c8	Fixed in 079986d6db1f8e3d50c55f400cf998ac9690d2c8
LinuxLinux	Affected ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 348a5f8d06c7bdf954e13c17ad5f80b59a075604	Fixed in 348a5f8d06c7bdf954e13c17ad5f80b59a075604
LinuxLinux	Affected ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 9a9b89eea4a9cc7726702946ff688d716962fabd	Fixed in 9a9b89eea4a9cc7726702946ff688d716962fabd
LinuxLinux	Affected =6.11	Fixed in–

AI-suggested

A fix is available and has been applied in the Linux kernel versions identified by the fixed commit hashes. Users should update to a kernel version including these fixes to resolve the issue. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's bnxt_en driver involves improper deletion logic for RSS contexts, causing resource leaks of VNICs in firmware when the network interface is closed with active RSS contexts. This can lead to failures in creating new VNICs on subsequent interface opens, resulting in loss of active RSS contexts. The issue is fixed by removing an unnecessary condition that restricted deletion to when the interface is running.

Impact

The vulnerability causes resource leaks in firmware VNICs when closing network interfaces with active RSS contexts, potentially leading to failures in restoring RSS contexts on interface reopen. This results in loss of active RSS contexts, which can degrade network performance or functionality relying on RSS. There is no indication of remote code execution or privilege escalation. No known exploits in the wild have been reported.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Nov 2026, 15:50 UTC

Technical details

References

Community reviews

Related threats