CVE-2026-23210

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23210
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>

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/7565d4df66b6619b50dc36618d8b8f1787d77e19 Patch
https://git.kernel.org/stable/c/fc6f36eaaedcf4b81af6fe1a568f018ffd530660 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
History

18 Mar 2026, 17:22

Type Values Removed Values Added
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/7565d4df66b6619b50dc36618d8b8f1787d77e19 - () https://git.kernel.org/stable/c/7565d4df66b6619b50dc36618d8b8f1787d77e19 - Patch
References () https://git.kernel.org/stable/c/fc6f36eaaedcf4b81af6fe1a568f018ffd530660 - () https://git.kernel.org/stable/c/fc6f36eaaedcf4b81af6fe1a568f018ffd530660 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7

18 Feb 2026, 17:52

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: ice: Soluciona la desreferencia de puntero NULL de PTP durante la reconstrucción de VSI Soluciona la condición de carrera donde el trabajo periódico de PTP se ejecuta mientras VSI está siendo reconstruido, accediendo a vsi-&gt;rx_rings NULL. La secuencia fue: 1. ice_ptp_prepare_for_reset() cancela el trabajo de PTP 2. ice_ptp_rebuild() encola inmediatamente el trabajo de PTP 3. La reconstrucción de VSI ocurre DESPUÉS de ice_ptp_rebuild() 4. El trabajo de PTP se ejecuta y accede a vsi-&gt;rx_rings NULL Corrección: Mantener el trabajo de PTP cancelado durante la reconstrucción, solo encolarlo después de que la reconstrucción de VSI se complete en ice_rebuild(). Se añadió la función auxiliar ice_ptp_queue_work() para encapsular la lógica de encolamiento del trabajo de PTP, asegurando que solo se encole cuando PTP es compatible y el estado es ICE_PTP_READY. Registro de error: [ 121.392544] ice 0000:60:00.1: Reinicio de PTP exitoso [ 121.392692] BUG: desreferencia de puntero NULL del kernel, dirección: 0000000000000000 [ 121.392712] #PF: acceso de lectura de supervisor en modo kernel [ 121.392720] #PF: error_code(0x0000) - página no presente [ 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] Traza de Llamada: [ 121.393047] [ 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]

14 Feb 2026, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-14 17:15

Updated : 2026-03-18 17:22

NVD link : CVE-2026-23210

Mitre link : CVE-2026-23210

CVE.ORG link : CVE-2026-23210

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference