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EUVD-2026-309828

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:10

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:10:40.995049+00:00",
  "id": "EUVD-2026-309828"
}

CVE-2021-47589 (GCVE-0-2021-47589)

Vulnerability from cvelistv5 – Published: 2024-06-19 14:53 – Updated: 2026-05-11 13:57

Title

igbvf: fix double free in `igbvf_probe`

Summary

In the Linux kernel, the following vulnerability has been resolved: igbvf: fix double free in `igbvf_probe` In `igbvf_probe`, if register_netdev() fails, the program will go to label err_hw_init, and then to label err_ioremap. In free_netdev() which is just below label err_ioremap, there is `list_for_each_entry_safe` and `netif_napi_del` which aims to delete all entries in `dev->napi_list`. The program has added an entry `adapter->rx_ring->napi` which is added by `netif_napi_add` in igbvf_alloc_queues(). However, adapter->rx_ring has been freed below label err_hw_init. So this a UAF. In terms of how to patch the problem, we can refer to igbvf_remove() and delete the entry before `adapter->rx_ring`. The KASAN logs are as follows: [ 35.126075] BUG: KASAN: use-after-free in free_netdev+0x1fd/0x450 [ 35.127170] Read of size 8 at addr ffff88810126d990 by task modprobe/366 [ 35.128360] [ 35.128643] CPU: 1 PID: 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14 [ 35.129789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 35.131749] Call Trace: [ 35.132199] dump_stack_lvl+0x59/0x7b [ 35.132865] print_address_description+0x7c/0x3b0 [ 35.133707] ? free_netdev+0x1fd/0x450 [ 35.134378] __kasan_report+0x160/0x1c0 [ 35.135063] ? free_netdev+0x1fd/0x450 [ 35.135738] kasan_report+0x4b/0x70 [ 35.136367] free_netdev+0x1fd/0x450 [ 35.137006] igbvf_probe+0x121d/0x1a10 [igbvf] [ 35.137808] ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf] [ 35.138751] local_pci_probe+0x13c/0x1f0 [ 35.139461] pci_device_probe+0x37e/0x6c0 [ 35.165526] [ 35.165806] Allocated by task 366: [ 35.166414] ____kasan_kmalloc+0xc4/0xf0 [ 35.167117] foo_kmem_cache_alloc_trace+0x3c/0x50 [igbvf] [ 35.168078] igbvf_probe+0x9c5/0x1a10 [igbvf] [ 35.168866] local_pci_probe+0x13c/0x1f0 [ 35.169565] pci_device_probe+0x37e/0x6c0 [ 35.179713] [ 35.179993] Freed by task 366: [ 35.180539] kasan_set_track+0x4c/0x80 [ 35.181211] kasan_set_free_info+0x1f/0x40 [ 35.181942] ____kasan_slab_free+0x103/0x140 [ 35.182703] kfree+0xe3/0x250 [ 35.183239] igbvf_probe+0x1173/0x1a10 [igbvf] [ 35.184040] local_pci_probe+0x13c/0x1f0

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-20 17:58 UTC

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ffe1695b678729ede…
https://git.kernel.org/stable/c/79d9b092035dcdbe6…
https://git.kernel.org/stable/c/8d0c927a9fb2b4065…
https://git.kernel.org/stable/c/cc9b655bb84f1be28…
https://git.kernel.org/stable/c/8addba6cab94ce016…
https://git.kernel.org/stable/c/74a16e062b23332d8…
https://git.kernel.org/stable/c/944b8be08131f5faf…
https://git.kernel.org/stable/c/b6d335a60dc624c0d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < ffe1695b678729edec04037e691007900a2b2beb (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < 79d9b092035dcdbe636b70433149df9cc6db1e49 (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < 8d0c927a9fb2b4065230936b77b54f857a3754fc (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < cc9b655bb84f1be283293dfea94dff9a31b106ac (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < 8addba6cab94ce01686ea2e80ed1530f9dc33a9a (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < 74a16e062b23332d8db017ff4a41e16279c44411 (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < 944b8be08131f5faf2cd2440aa1c24a39a163a54 (git) Affected: d4e0fe01a38a073568aee541a0247fe734095979 , < b6d335a60dc624c0d279333b22c737faa765b028 (git)
Linux	Linux	Affected: 2.6.30 Unaffected: 0 , < 2.6.30 (semver) Unaffected: 4.4.296 , ≤ 4.4.* (semver) Unaffected: 4.9.294 , ≤ 4.9.* (semver) Unaffected: 4.14.259 , ≤ 4.14.* (semver) Unaffected: 4.19.222 , ≤ 4.19.* (semver) Unaffected: 5.4.168 , ≤ 5.4.* (semver) Unaffected: 5.10.88 , ≤ 5.10.* (semver) Unaffected: 5.15.11 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigbvf: fix double free in `igbvf_probe`\n\nIn `igbvf_probe`, if register_netdev() fails, the program will go to\nlabel err_hw_init, and then to label err_ioremap. In free_netdev() which\nis just below label err_ioremap, there is `list_for_each_entry_safe` and\n`netif_napi_del` which aims to delete all entries in `dev-\u003enapi_list`.\nThe program has added an entry `adapter-\u003erx_ring-\u003enapi` which is added by\n`netif_napi_add` in igbvf_alloc_queues(). However, adapter-\u003erx_ring has\nbeen freed below label err_hw_init. So this a UAF.\n\nIn terms of how to patch the problem, we can refer to igbvf_remove() and\ndelete the entry before `adapter-\u003erx_ring`.\n\nThe KASAN logs are as follows:\n\n[   35.126075] BUG: KASAN: use-after-free in free_netdev+0x1fd/0x450\n[   35.127170] Read of size 8 at addr ffff88810126d990 by task modprobe/366\n[   35.128360]\n[   35.128643] CPU: 1 PID: 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14\n[   35.129789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\n[   35.131749] Call Trace:\n[   35.132199]  dump_stack_lvl+0x59/0x7b\n[   35.132865]  print_address_description+0x7c/0x3b0\n[   35.133707]  ? free_netdev+0x1fd/0x450\n[   35.134378]  __kasan_report+0x160/0x1c0\n[   35.135063]  ? free_netdev+0x1fd/0x450\n[   35.135738]  kasan_report+0x4b/0x70\n[   35.136367]  free_netdev+0x1fd/0x450\n[   35.137006]  igbvf_probe+0x121d/0x1a10 [igbvf]\n[   35.137808]  ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf]\n[   35.138751]  local_pci_probe+0x13c/0x1f0\n[   35.139461]  pci_device_probe+0x37e/0x6c0\n[   35.165526]\n[   35.165806] Allocated by task 366:\n[   35.166414]  ____kasan_kmalloc+0xc4/0xf0\n[   35.167117]  foo_kmem_cache_alloc_trace+0x3c/0x50 [igbvf]\n[   35.168078]  igbvf_probe+0x9c5/0x1a10 [igbvf]\n[   35.168866]  local_pci_probe+0x13c/0x1f0\n[   35.169565]  pci_device_probe+0x37e/0x6c0\n[   35.179713]\n[   35.179993] Freed by task 366:\n[   35.180539]  kasan_set_track+0x4c/0x80\n[   35.181211]  kasan_set_free_info+0x1f/0x40\n[   35.181942]  ____kasan_slab_free+0x103/0x140\n[   35.182703]  kfree+0xe3/0x250\n[   35.183239]  igbvf_probe+0x1173/0x1a10 [igbvf]\n[   35.184040]  local_pci_probe+0x13c/0x1f0"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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EUVD-2026-309828

CVE-2021-47589 (GCVE-0-2021-47589)

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