// For flags

CVE-2025-38417

ice: fix eswitch code memory leak in reset scenario

Severity Score

7.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved: ice: fix eswitch code memory leak in reset scenario Add simple eswitch mode checker in attaching VF procedure and allocate
required port representor memory structures only in switchdev mode.
The reset flows triggers VF (if present) detach/attach procedure.
It might involve VF port representor(s) re-creation if the device is
configured is switchdev mode (not legacy one).
The memory was blindly allocated in current implementation,
regardless of the mode and not freed if in legacy mode. Kmemeleak trace:
unreferenced object (percpu) 0x7e3bce5b888458 (size 40): comm "bash", pid 1784, jiffies 4295743894 hex dump (first 32 bytes on cpu 45): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): pcpu_alloc_noprof+0x4c4/0x7c0 ice_repr_create+0x66/0x130 [ice] ice_repr_create_vf+0x22/0x70 [ice] ice_eswitch_attach_vf+0x1b/0xa0 [ice] ice_reset_all_vfs+0x1dd/0x2f0 [ice] ice_pci_err_resume+0x3b/0xb0 [ice] pci_reset_function+0x8f/0x120 reset_store+0x56/0xa0 kernfs_fop_write_iter+0x120/0x1b0 vfs_write+0x31c/0x430 ksys_write+0x61/0xd0 do_syscall_64+0x5b/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e Testing hints (ethX is PF netdev):
- create at least one VF echo 1 > /sys/class/net/ethX/device/sriov_numvfs
- trigger the reset echo 1 > /sys/class/net/ethX/device/reset

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ice: se corrige la fuga de memoria del código de eswitch en el escenario de reinicio. Se añade un verificador simple del modo eswitch al procedimiento de conexión de VF y se asignan las estructuras de memoria requeridas para el representante de puerto solo en el modo switchdev. Los flujos de reinicio activan el procedimiento de desconexión/conexión de VF (si está presente). Podría implicar la recreación del/de los representante(s) de puerto de VF si el dispositivo está configurado en modo switchdev (no en el modo heredado). La memoria se asignaba ciegamente en la implementación actual, independientemente del modo, y no se liberaba en el modo heredado. Rastreo de Kmemeleak: objeto sin referencia (percpu) 0x7e3bce5b888458 (size 40): comm "bash", pid 1784, jiffies 4295743894 hex dump (first 32 bytes on cpu 45): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): pcpu_alloc_noprof+0x4c4/0x7c0 ice_repr_create+0x66/0x130 [ice] ice_repr_create_vf+0x22/0x70 [ice] ice_eswitch_attach_vf+0x1b/0xa0 [ice] ice_reset_all_vfs+0x1dd/0x2f0 [ice] ice_pci_err_resume+0x3b/0xb0 [ice] pci_reset_function+0x8f/0x120 reset_store+0x56/0xa0 kernfs_fop_write_iter+0x120/0x1b0 vfs_write+0x31c/0x430 ksys_write+0x61/0xd0 do_syscall_64+0x5b/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e Testing hints (ethX is PF netdev): - create at least one VF echo 1 > /sys/class/net/ethX/device/sriov_numvfs - trigger the reset echo 1 > /sys/class/net/ethX/device/reset

In the Linux kernel, the following vulnerability has been resolved: ice: fix eswitch code memory...

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2025-04-16 CVE Reserved
  • 2025-07-25 CVE Published
  • 2025-07-28 CVE Updated
  • 2025-07-31 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 6.12 < 6.12.35
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.12 < 6.12.35"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 6.12 < 6.15.4
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.12 < 6.15.4"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 6.12 < 6.16
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.12 < 6.16"
en
Affected