CVE-2026-23210None▾ Sunlit

ice: Fix PTP NULL pointer dereference during VSI rebuild

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…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

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Proof of concept

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Published

Feb 14, 2026

Updated

Oct 19, 2026

CVSS

—

Vendor

Linux

Product

Linux

CWE

—

Depth score

3 · Minimal

EPSS

0.10% · p1

Platforms

—

Source

CVEORG

Vector

—

CISA SSVC

decided 2026-06-10

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 19.

0.1% → 0.10%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 247 days

Feb 14, 2026Published
Disclosed via CVEORG
Oct 19, 2026Record revised
Last analysed / modified upstream
Oct 19, 2026EPSS first tracked
0.1%

Linux #cve.org

Affected

Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < ba0c7fff6616025a7d3a9e887e7ce16b06dc34b9
Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < 7565d4df66b6619b50dc36618d8b8f1787d77e19
Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < fc6f36eaaedcf4b81af6fe1a568f018ffd530660
Linux 6.9

Full technical detail▾

Overview

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:

ice_ptp_prepare_for_reset() cancels PTP work
ice_ptp_rebuild() immediately queues PTP work
VSI rebuild happens AFTER ice_ptp_rebuild()
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>

Affected

Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < ba0c7fff6616025a7d3a9e887e7ce16b06dc34b9
Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < 7565d4df66b6619b50dc36618d8b8f1787d77e19
Linux >= 803bef817807d2d36c930dada20c96fffae0dd19 < fc6f36eaaedcf4b81af6fe1a568f018ffd530660
Linux 6.9

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org

ice: Fix PTP NULL pointer dereference during VSI rebuild

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

Overview

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:

ice_ptp_prepare_for_reset() cancels PTP work

ice_ptp_rebuild() immediately queues PTP work

VSI rebuild happens AFTER ice_ptp_rebuild()

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.