CVE-2024-46766

2024-09-1808:15:04

Linux

web.nvd.nist.gov

linux kernel

vulnerability

ice

netif_queue_set_napi

rtnl-locked

synchronization

xdp queues

out-of-bounds writes

kasan

AI Score

6.3

Confidence

Low

EPSS

Percentile

9.6%

JSON

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

ice: move netif_queue_set_napi to rtnl-protected sections

Currently, netif_queue_set_napi() is called from ice_vsi_rebuild() that is
not rtnl-locked when called from the reset. This creates the need to take
the rtnl_lock just for a single function and complicates the
synchronization with .ndo_bpf. At the same time, there no actual need to
fill napi-to-queue information at this exact point.

Fill napi-to-queue information when opening the VSI and clear it when the
VSI is being closed. Those routines are already rtnl-locked.

Also, rewrite napi-to-queue assignment in a way that prevents inclusion of
XDP queues, as this leads to out-of-bounds writes, such as one below.

[ +0.000004] BUG: KASAN: slab-out-of-bounds in netif_queue_set_napi+0x1c2/0x1e0
[ +0.000012] Write of size 8 at addr ffff889881727c80 by task bash/7047
[ +0.000006] CPU: 24 PID: 7047 Comm: bash Not tainted 6.10.0-rc2+ #2
[ +0.000004] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0014.082620210524 08/26/2021
[ +0.000003] Call Trace:
[ +0.000003] <TASK>
[ +0.000002] dump_stack_lvl+0x60/0x80
[ +0.000007] print_report+0xce/0x630
[ +0.000007] ? __pfx__raw_spin_lock_irqsave+0x10/0x10
[ +0.000007] ? __virt_addr_valid+0x1c9/0x2c0
[ +0.000005] ? netif_queue_set_napi+0x1c2/0x1e0
[ +0.000003] kasan_report+0xe9/0x120
[ +0.000004] ? netif_queue_set_napi+0x1c2/0x1e0
[ +0.000004] netif_queue_set_napi+0x1c2/0x1e0
[ +0.000005] ice_vsi_close+0x161/0x670 [ice]
[ +0.000114] ice_dis_vsi+0x22f/0x270 [ice]
[ +0.000095] ice_pf_dis_all_vsi.constprop.0+0xae/0x1c0 [ice]
[ +0.000086] ice_prepare_for_reset+0x299/0x750 [ice]
[ +0.000087] pci_dev_save_and_disable+0x82/0xd0
[ +0.000006] pci_reset_function+0x12d/0x230
[ +0.000004] reset_store+0xa0/0x100
[ +0.000006] ? __pfx_reset_store+0x10/0x10
[ +0.000002] ? __pfx_mutex_lock+0x10/0x10
[ +0.000004] ? __check_object_size+0x4c1/0x640
[ +0.000007] kernfs_fop_write_iter+0x30b/0x4a0
[ +0.000006] vfs_write+0x5d6/0xdf0
[ +0.000005] ? fd_install+0x180/0x350
[ +0.000005] ? __pfx_vfs_write+0x10/0xA10
[ +0.000004] ? do_fcntl+0x52c/0xcd0
[ +0.000004] ? kasan_save_track+0x13/0x60
[ +0.000003] ? kasan_save_free_info+0x37/0x60
[ +0.000006] ksys_write+0xfa/0x1d0
[ +0.000003] ? __pfx_ksys_write+0x10/0x10
[ +0.000002] ? __x64_sys_fcntl+0x121/0x180
[ +0.000004] ? _raw_spin_lock+0x87/0xe0
[ +0.000005] do_syscall_64+0x80/0x170
[ +0.000007] ? _raw_spin_lock+0x87/0xe0
[ +0.000004] ? __pfx__raw_spin_lock+0x10/0x10
[ +0.000003] ? file_close_fd_locked+0x167/0x230
[ +0.000005] ? syscall_exit_to_user_mode+0x7d/0x220
[ +0.000005] ? do_syscall_64+0x8c/0x170
[ +0.000004] ? do_syscall_64+0x8c/0x170
[ +0.000003] ? do_syscall_64+0x8c/0x170
[ +0.000003] ? fput+0x1a/0x2c0
[ +0.000004] ? filp_close+0x19/0x30
[ +0.000004] ? do_dup2+0x25a/0x4c0
[ +0.000004] ? __x64_sys_dup2+0x6e/0x2e0
[ +0.000002] ? syscall_exit_to_user_mode+0x7d/0x220
[ +0.000004] ? do_syscall_64+0x8c/0x170
[ +0.000003] ? __count_memcg_events+0x113/0x380
[ +0.000005] ? handle_mm_fault+0x136/0x820
[ +0.000005] ? do_user_addr_fault+0x444/0xa80
[ +0.000004] ? clear_bhb_loop+0x25/0x80
[ +0.000004] ? clear_bhb_loop+0x25/0x80
[ +0.000002] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ +0.000005] RIP: 0033:0x7f2033593154

Affected configurations

Vulners

Node

linuxlinux_kernelRange6.8–6.10.10

linuxlinux_kernelRange6.11.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/ice/ice_base.c",
      "drivers/net/ethernet/intel/ice/ice_lib.c",
      "drivers/net/ethernet/intel/ice/ice_lib.h",
      "drivers/net/ethernet/intel/ice/ice_main.c"
    ],
    "versions": [
      {
        "version": "080b0c8d6d26",
        "lessThan": "2285c2faef19",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "080b0c8d6d26",
        "lessThan": "2a5dc090b92c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/ice/ice_base.c",
      "drivers/net/ethernet/intel/ice/ice_lib.c",
      "drivers/net/ethernet/intel/ice/ice_lib.h",
      "drivers/net/ethernet/intel/ice/ice_main.c"
    ],
    "versions": [
      {
        "version": "6.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.8",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.10",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]