CVE-2026-43260: Linux bnxt_en RSS Context Delete Leak
CVE-2026-43260 Published on May 6, 2026
bnxt_en: Fix RSS context delete logic
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.
Products Associated with CVE-2026-43260
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Affected Versions
Linux:- Version 667ac333dbb7e265b3f5bc4bc94e236f64682c86 and below 348a5f8d06c7bdf954e13c17ad5f80b59a075604 is affected.
- Version 667ac333dbb7e265b3f5bc4bc94e236f64682c86 and below 079986d6db1f8e3d50c55f400cf998ac9690d2c8 is affected.
- Version 667ac333dbb7e265b3f5bc4bc94e236f64682c86 and below 9a9b89eea4a9cc7726702946ff688d716962fabd is affected.
- Version 667ac333dbb7e265b3f5bc4bc94e236f64682c86 and below e123d9302d223767bd910bfbcfe607bae909f8ac is affected.
- Version 6.11 is affected.
- Before 6.11 is unaffected.
- Version 6.12.75, <= 6.12.* is unaffected.
- Version 6.18.16, <= 6.18.* is unaffected.
- Version 6.19.6, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.