Skip to content
Fencer Vulns
medium 4.7

CVE-2026-23210 json

ice: Fix PTP NULL pointer dereference during VSI rebuild

published 2026-02-14 8 mo ago modified 2026-10-19 20 d ago also EUVD-2026-5836

cvss
4.7
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 0%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

ice: Fix PTP NULL pointer dereference during VSI rebuild

Fix race condition where PTP periodic work runs while VSI is being rebuilt, accessing NULL vsi->rx_rings.

The sequence was: 1. ice_ptp_prepare_for_reset() cancels PTP work 2. ice_ptp_rebuild() immediately queues PTP work 3. VSI rebuild happens AFTER ice_ptp_rebuild() 4. PTP work runs and accesses NULL vsi->rx_rings

Fix: Keep PTP work cancelled during rebuild, only queue it after VSI rebuild completes in ice_rebuild().

Added ice_ptp_queue_work() helper function to encapsulate the logic for queuing PTP work, ensuring it's only queued when PTP is supported and the state is ICE_PTP_READY.

Error log: [ 121.392544] ice 0000:60:00.1: PTP reset successful [ 121.392692] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 121.392712] #PF: supervisor read access in kernel mode [ 121.392720] #PF: error_code(0x0000) - not-present page [ 121.392727] PGD 0 [ 121.392734] Oops: Oops: 0000 [#1] SMP NOPTI [ 121.392746] CPU: 8 UID: 0 PID: 1005 Comm: ice-ptp-0000:60 Tainted: G S 6.19.0-rc6+ #4 PREEMPT(voluntary) [ 121.392761] Tainted: [S]=CPU_OUT_OF_SPEC [ 121.392773] RIP: 0010:ice_ptp_update_cached_phctime+0xbf/0x150 [ice] [ 121.393042] Call Trace: [ 121.393047] <TASK> [ 121.393055] ice_ptp_periodic_work+0x69/0x180 [ice] [ 121.393202] kthread_worker_fn+0xa2/0x260 [ 121.393216] ? __pfx_ice_ptp_periodic_work+0x10/0x10 [ice] [ 121.393359] ? __pfx_kthread_worker_fn+0x10/0x10 [ 121.393371] kthread+0x10d/0x230 [ 121.393382] ? __pfx_kthread+0x10/0x10 [ 121.393393] ret_from_fork+0x273/0x2b0 [ 121.393407] ? __pfx_kthread+0x10/0x10 [ 121.393417] ret_from_fork_asm+0x1a/0x30 [ 121.393432] </TASK>

Patch / fix

  • Linux Linux 6.12.80, 6.18.10, 6.19
  • linux Debian 13 6.12.85-1
  • linux Debian 14 6.18.10-1

debian advisories DEBIAN-CVE-2026-23210

  • kernel RHEL 10.2 6.12.0-211.7.1.el10_2
  • rv RHEL 10.2 6.12.0-211.7.1.el10_2
  • perf RHEL 10.2 6.12.0-211.7.1.el10_2
  • rtla RHEL 10.2 6.12.0-211.7.1.el10_2
  • libperf RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-rt RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-64k RHEL 10.2 6.12.0-211.7.1.el10_2
  • kernel-core RHEL 10.2 6.12.0-211.7.1.el10_2

red hat advisories RHSA-2026:23224RHSA-2026:22334RHSA-2026:18134RHSA-2026:6570

  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1
  • kernel-syms SLE Module for Development Tools 15 SP7 6.4.0-150700.53.81.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.53.81.1
  • kernel-source SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1
  • kernel-default SLE Workstation Extension 15 SP7, SLE Module for Legacy 15 SP7, SLE Module for Basesystem 15 SP7 +2 more 6.4.0-150700.53.81.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1
  • kernel-obs-build SLE Module for Development Tools 15 SP7 6.4.0-150700.53.81.1
  • kernel-default-base SLE Module for Basesystem 15 SP7 6.4.0-150700.53.81.1.150700.17.45.1

suse advisories SUSE-SU-2026:4254-1SUSE-SU-2026:4369-1SUSE-SU-2026:4120-1SUSE-SU-2026:23481-1SUSE-SU-2026:23477-1SUSE-SU-2026:23529-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.27.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-azure openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.27.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.27.1

opensuse advisories openSUSE-SU-2026:20416-1

  • kernel AlmaLinux 10 6.12.0-211.7.1.el10_2
  • rv AlmaLinux 10 6.12.0-211.7.1.el10_2
  • perf AlmaLinux 10 6.12.0-211.7.1.el10_2
  • rtla AlmaLinux 10 6.12.0-211.7.1.el10_2
  • libperf AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-rt AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-64k AlmaLinux 10 6.12.0-211.7.1.el10_2
  • kernel-core AlmaLinux 10 6.12.0-211.7.1.el10_2

almalinux advisories ALSA-2026:18134ALSA-2026:6570

  • kernel Rocky Linux 9 5.14.0-611.47.1.el9_7

rocky linux advisories RLSA-2026:6570

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-2026-23210 updated cvss 7.0

kernel: Linux kernel: Denial of Service in ice driver due to race condition during VSI rebuild

  • 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
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.119.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.119.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.119.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.119.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.119.1.el9_6
    fixed: vendor fix RHSA-2026:23224
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.47.1.el9_7, perf 5.14.0-611.47.1.el9_7, rtla 5.14.0-611.47.1.el9_7, python3-perf 5.14.0-611.47.1.el9_7, kernel-devel-matched 5.14.0-611.47.1.el9_7, kernel-64k-devel-matched 5.14.0-611.47.1.el9_7, +7 more
    fixed: vendor fix RHSA-2026:6570
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.7.1.el10_2, perf 6.12.0-211.7.1.el10_2, rtla 6.12.0-211.7.1.el10_2, python3-perf 6.12.0-211.7.1.el10_2, kernel-devel-matched 6.12.0-211.7.1.el10_2, kernel-64k-devel-matched 6.12.0-211.7.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:18134
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.76.1.el10_0, perf 6.12.0-55.76.1.el10_0, rtla 6.12.0-55.76.1.el10_0, python3-perf 6.12.0-55.76.1.el10_0, kernel-devel-matched 6.12.0-55.76.1.el10_0, kernel-64k-devel-matched 6.12.0-55.76.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:22334
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.119.1.el9_6, perf 5.14.0-570.119.1.el9_6, rtla 5.14.0-570.119.1.el9_6, python3-perf 5.14.0-570.119.1.el9_6, kernel-devel-matched 5.14.0-570.119.1.el9_6, kernel-64k-devel-matched 5.14.0-570.119.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:23224
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.47.1.el9_7, kernel-64k 5.14.0-611.47.1.el9_7, kernel-core 5.14.0-611.47.1.el9_7, kernel-tools 5.14.0-611.47.1.el9_7, kernel-modules 5.14.0-611.47.1.el9_7, kernel-64k-core 5.14.0-611.47.1.el9_7, +27 more
    fixed: vendor fix RHSA-2026:6570
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.7.1.el10_2, kernel-64k 6.12.0-211.7.1.el10_2, kernel-core 6.12.0-211.7.1.el10_2, kernel-tools 6.12.0-211.7.1.el10_2, kernel-modules 6.12.0-211.7.1.el10_2, kernel-64k-core 6.12.0-211.7.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:18134
show 14 more
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.76.1.el10_0, kernel-64k 6.12.0-55.76.1.el10_0, kernel-core 6.12.0-55.76.1.el10_0, kernel-tools 6.12.0-55.76.1.el10_0, kernel-modules 6.12.0-55.76.1.el10_0, kernel-64k-core 6.12.0-55.76.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:22334
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.119.1.el9_6, kernel-64k 5.14.0-570.119.1.el9_6, kernel-core 5.14.0-570.119.1.el9_6, kernel-tools 5.14.0-570.119.1.el9_6, kernel-modules 5.14.0-570.119.1.el9_6, kernel-64k-core 5.14.0-570.119.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:23224
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.47.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.47.1.el9_7
    fixed: vendor fix RHSA-2026:6570
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.7.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.7.1.el10_2
    fixed: vendor fix RHSA-2026:18134
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.76.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.76.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.76.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.76.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.76.1.el10_0
    fixed: vendor fix RHSA-2026:22334
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.47.1.el9_7, kernel-rt-64k 5.14.0-611.47.1.el9_7, kernel-rt-core 5.14.0-611.47.1.el9_7, kernel-rt-modules 5.14.0-611.47.1.el9_7, kernel-rt-64k-core 5.14.0-611.47.1.el9_7, kernel-rt-debug-core 5.14.0-611.47.1.el9_7, +14 more
    fixed: vendor fix RHSA-2026:6570
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.7.1.el10_2, kernel-rt-64k 6.12.0-211.7.1.el10_2, kernel-rt-core 6.12.0-211.7.1.el10_2, kernel-rt-modules 6.12.0-211.7.1.el10_2, kernel-rt-64k-core 6.12.0-211.7.1.el10_2, kernel-rt-debug-core 6.12.0-211.7.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:18134
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.76.1.el10_0, kernel-rt-64k 6.12.0-55.76.1.el10_0, kernel-rt-core 6.12.0-55.76.1.el10_0, kernel-rt-modules 6.12.0-55.76.1.el10_0, kernel-rt-64k-core 6.12.0-55.76.1.el10_0, kernel-rt-debug-core 6.12.0-55.76.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:22334
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.119.1.el9_6, kernel-rt-64k 5.14.0-570.119.1.el9_6, kernel-rt-core 5.14.0-570.119.1.el9_6, kernel-rt-modules 5.14.0-570.119.1.el9_6, kernel-rt-64k-core 5.14.0-570.119.1.el9_6, kernel-rt-debug-core 5.14.0-570.119.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:23224
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.47.1.el9_7, kernel-rt-core 5.14.0-611.47.1.el9_7, kernel-rt-modules 5.14.0-611.47.1.el9_7, kernel-rt-debug-core 5.14.0-611.47.1.el9_7, kernel-rt-modules-core 5.14.0-611.47.1.el9_7, kernel-rt-debug-modules 5.14.0-611.47.1.el9_7, +4 more
    fixed: vendor fix RHSA-2026:6570
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.7.1.el10_2, kernel-rt-core 6.12.0-211.7.1.el10_2, kernel-rt-modules 6.12.0-211.7.1.el10_2, kernel-rt-debug-core 6.12.0-211.7.1.el10_2, kernel-rt-modules-core 6.12.0-211.7.1.el10_2, kernel-rt-debug-modules 6.12.0-211.7.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:18134
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.76.1.el10_0, kernel-rt-kvm 6.12.0-55.76.1.el10_0, kernel-rt-core 6.12.0-55.76.1.el10_0, kernel-rt-modules 6.12.0-55.76.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.76.1.el10_0, kernel-rt-debug-core 6.12.0-55.76.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:22334
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.119.1.el9_6, kernel-rt-kvm 5.14.0-570.119.1.el9_6, kernel-rt-core 5.14.0-570.119.1.el9_6, kernel-rt-modules 5.14.0-570.119.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.119.1.el9_6, kernel-rt-debug-core 5.14.0-570.119.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:23224
  • 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
    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
4 mo ago

Exploit prediction

0.10% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
  • CWE-476 NULL Pointer Dereference
Technology feeds

References

Sources

Fencer Vulns 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.