CVE-2025-21883

HIGH EPSS 9.2%
Published Mar 27, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Mar 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ice: Fix deinitializing VF in error path If ice_ena_vfs() fails after calling ice_create_vf_entries(), it frees all VFs without removing them from snapshot PF-VF mailbox list, leading to list corruption. Reproducer: devlink dev eswitch set $PF1_PCI mode switchdev ip l s $PF1 up ip l s $PF1 promisc on sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs Trace (minimized): list_add corruption. next->prev should be prev (ffff8882e241c6f0), but was 0000000000000000. (next=ffff888455da1330). kernel BUG at lib/list_debug.c:29! RIP: 0010:__list_add_valid_or_report+0xa6/0x100 ice_mbx_init_vf_info+0xa7/0x180 [ice] ice_initialize_vf_entry+0x1fa/0x250 [ice] ice_sriov_configure+0x8d7/0x1520 [ice] ? __percpu_ref_switch_mode+0x1b1/0x5d0 ? __pfx_ice_sriov_configure+0x10/0x10 [ice] Sometimes a KASAN report can be seen instead with a similar stack trace: BUG: KASAN: use-after-free in __list_add_valid_or_report+0xf1/0x100 VFs are added to this list in ice_mbx_init_vf_info(), but only removed in ice_free_vfs(). Move the removing to ice_free_vf_entries(), which is also being called in other places where VFs are being removed (including ice_free_vfs() itself).

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
9.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥6.4  –  <6.6.81
linuxlinux_kernel*≥6.7  –  <6.12.18
linuxlinux_kernel*≥6.13  –  <6.13.6
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/34393fd78d7183a007eaf0090966ebedcc29bd57
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3c01102bec9592928e6b155da41cfcd5d25a2066
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/79990cf5e7aded76d0c092c9f5ed31eb1c75e02c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a4880583f88deba63504ce1c8287a70d39c01378
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/34393fd78d7183a007eaf0090966ebedcc29bd57
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3c01102bec9592928e6b155da41cfcd5d25a2066
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/79990cf5e7aded76d0c092c9f5ed31eb1c75e02c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a4880583f88deba63504ce1c8287a70d39c01378
    Patch