CVE-2026-43260

Advisory lineage Upstream: 0 Downstream: 5
Analyzed
Published: 06 May 2026, 11:28
Last modified:11 May 2026, 22:21

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.14% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 May 2026, 11:28
Published
Vulnerability first disclosed
11 May 2026, 22:21
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix RSS context delete logic We need to free the corresponding RSS context VNIC in FW everytime an RSS context is deleted in driver. Commit 667ac333dbb7 added a check to delete the VNIC in FW only when netif_running() is true to help delete RSS contexts with interface down. Having that condition will make the driver leak VNICs in FW whenever close() happens with active RSS contexts. On the subsequent open(), as part of RSS context restoration, we will end up trying to create extra VNICs for which we did not make any reservation. FW can fail this request, thereby making us lose active RSS contexts. Suppose an RSS context is deleted already and we try to process a delete request again, then the HWRM functions will check for validity of the request and they simply return if the resource is already freed. So, even for delete-when-down cases, netif_running() check is not necessary. Remove the netif_running() condition check when deleting an RSS context.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.14%• Percentile: 4%

Techniques & Countermeasures

  • CWE-415•Double Free

    The product calls free() twice on the same memory address.

Affected Systems

  • linux•linux

    ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 348a5f8d06c7bdf954e13c17ad5f80b59a075604 | ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 079986d6db1f8e3d50c55f400cf998ac9690d2c8 | ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < 9a9b89eea4a9cc7726702946ff688d716962fabd | ≥ 667ac333dbb7e265b3f5bc4bc94e236f64682c86, < e123d9302d223767bd910bfbcfe607bae909f8ac | 6.11

  • linux•linux kernel

    ≥ 6.11, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6 | 7.0:rc1

References (4)