Skip to content
Fencer Intel
high 7.8

CVE-2026-43260 json

bnxt_en: Fix RSS context delete logic

published 6mo ago modified 3d ago also EUVD-2026-27820

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • Linux Linux 6.12.75, 6.18.16, 6.19.6, 7.0
  • linux Debian 13 6.12.85-1
  • linux Debian 14 6.19.6-1

debian advisories DEBIAN-CVE-2026-43260

  • kernel RHEL 9 5.14.0-687.17.1.el9_8
  • rv RHEL 9 5.14.0-687.17.1.el9_8
  • perf RHEL 9 5.14.0-687.17.1.el9_8
  • rtla RHEL 9 5.14.0-687.17.1.el9_8
  • libperf RHEL 9 5.14.0-687.17.1.el9_8
  • kernel-rt RHEL 9 5.14.0-687.17.1.el9_8
  • kernel-64k RHEL 9 5.14.0-687.17.1.el9_8
  • kernel-core RHEL 9 5.14.0-687.17.1.el9_8

red hat advisories RHSA-2026:27789RHSA-2026:27288

  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.73.2
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.73.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.73.2
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.73.1
  • kernel-default SLE Workstation Extension 15 SP7, SLE Module for Legacy 15 SP7, SLE Module for Basesystem 15 SP7 +2 more 6.4.0-150700.53.73.2
  • kernel-zfcpdump SLE Module for Basesystem 15 SP7 6.4.0-150700.53.73.2
  • kernel-obs-build SLE Module for Development Tools 15 SP7 6.4.0-150700.53.73.2
  • kernel-default-base SLE Module for Basesystem 15 SP7 6.4.0-150700.53.73.2.150700.17.41.4

suse advisories SUSE-SU-2026:3166-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22835-1SUSE-SU-2026:22812-1SUSE-SU-2026:3130-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.36.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.36.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.36.1

opensuse advisories openSUSE-SU-2026:21388-1

  • kernel AlmaLinux 9 5.14.0-687.17.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.17.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.17.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.17.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.17.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.17.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.17.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.17.1.el9_8

almalinux advisories ALSA-2026:27789ALSA-2026:27288

  • kernel Rocky Linux 9 5.14.0-687.17.1.el9_8
  • kernel Rocky Linux 10 6.12.0-211.26.1.el10_2

rocky linux advisories RLSA-2026:27789RLSA-2026:27288

Is CVE-2026-43260 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-43260 updated cvss 7.3

kernel: bnxt_en: Fix RSS context delete logic

  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.17.1.el9_8, perf 5.14.0-687.17.1.el9_8, rtla 5.14.0-687.17.1.el9_8, python3-perf 5.14.0-687.17.1.el9_8, kernel-devel-matched 5.14.0-687.17.1.el9_8, kernel-64k-devel-matched 5.14.0-687.17.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:27789
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.26.1.el10_2, perf 6.12.0-211.26.1.el10_2, rtla 6.12.0-211.26.1.el10_2, python3-perf 6.12.0-211.26.1.el10_2, kernel-devel-matched 6.12.0-211.26.1.el10_2, kernel-64k-devel-matched 6.12.0-211.26.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:27288
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.17.1.el9_8, kernel-64k 5.14.0-687.17.1.el9_8, kernel-core 5.14.0-687.17.1.el9_8, kernel-tools 5.14.0-687.17.1.el9_8, kernel-modules 5.14.0-687.17.1.el9_8, kernel-64k-core 5.14.0-687.17.1.el9_8, +27 more
    fixed: vendor fix RHSA-2026:27789
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.26.1.el10_2, kernel-64k 6.12.0-211.26.1.el10_2, kernel-core 6.12.0-211.26.1.el10_2, kernel-tools 6.12.0-211.26.1.el10_2, kernel-modules 6.12.0-211.26.1.el10_2, kernel-64k-core 6.12.0-211.26.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:27288
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.17.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.17.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.17.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.17.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.17.1.el9_8
    fixed: vendor fix RHSA-2026:27789
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.26.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.26.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.26.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.26.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.26.1.el10_2
    fixed: vendor fix RHSA-2026:27288
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.17.1.el9_8, kernel-rt-64k 5.14.0-687.17.1.el9_8, kernel-rt-core 5.14.0-687.17.1.el9_8, kernel-rt-modules 5.14.0-687.17.1.el9_8, kernel-rt-64k-core 5.14.0-687.17.1.el9_8, kernel-rt-debug-core 5.14.0-687.17.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:27789
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.26.1.el10_2, kernel-rt-64k 6.12.0-211.26.1.el10_2, kernel-rt-core 6.12.0-211.26.1.el10_2, kernel-rt-modules 6.12.0-211.26.1.el10_2, kernel-rt-64k-core 6.12.0-211.26.1.el10_2, kernel-rt-debug-core 6.12.0-211.26.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:27288
show 3 more
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.17.1.el9_8, kernel-rt-core 5.14.0-687.17.1.el9_8, kernel-rt-modules 5.14.0-687.17.1.el9_8, kernel-rt-debug-core 5.14.0-687.17.1.el9_8, kernel-rt-modules-core 5.14.0-687.17.1.el9_8, kernel-rt-debug-modules 5.14.0-687.17.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:27789
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.26.1.el10_2, kernel-rt-core 6.12.0-211.26.1.el10_2, kernel-rt-modules 6.12.0-211.26.1.el10_2, kernel-rt-debug-core 6.12.0-211.26.1.el10_2, kernel-rt-modules-core 6.12.0-211.26.1.el10_2, kernel-rt-debug-modules 6.12.0-211.26.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:27288
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3d ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.