CVE-2026-43260

HIGH

bnxt_en: Fix RSS context delete logic

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 7.8
EPSS 0.0014
EPSS Percentile 3.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-415
Status published
Products (15)
linux/Kernel 6.11.0 - 6.12.75linux
linux/Kernel 6.13.0 - 6.18.16linux
linux/Kernel 6.19.0 - 6.19.6linux
Linux/Linux < 6.11
Linux/Linux 6.11
Linux/Linux 6.12.75 - 6.12.*
Linux/Linux 6.18.16 - 6.18.*
Linux/Linux 6.19.6 - 6.19.*
Linux/Linux 667ac333dbb7e265b3f5bc4bc94e236f64682c86 - 079986d6db1f8e3d50c55f400cf998ac9690d2c8
Linux/Linux 667ac333dbb7e265b3f5bc4bc94e236f64682c86 - 348a5f8d06c7bdf954e13c17ad5f80b59a075604
... and 5 more
Published May 06, 2026
Tracked Since May 06, 2026