CVE-2021-47589
published 2024-06-19CVE-2021-47589: 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…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.26%
17.5th percentile
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
[ 35.181
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.15-1 (bookworm) | linux 5.15.15-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < ffe1695b678729edec04037e691007900a2b2beb | ffe1695b678729edec04037e691007900a2b2beb |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < 79d9b092035dcdbe636b70433149df9cc6db1e49 | 79d9b092035dcdbe636b70433149df9cc6db1e49 |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < 8d0c927a9fb2b4065230936b77b54f857a3754fc | 8d0c927a9fb2b4065230936b77b54f857a3754fc |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < cc9b655bb84f1be283293dfea94dff9a31b106ac | cc9b655bb84f1be283293dfea94dff9a31b106ac |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < 8addba6cab94ce01686ea2e80ed1530f9dc33a9a | 8addba6cab94ce01686ea2e80ed1530f9dc33a9a |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < 74a16e062b23332d8db017ff4a41e16279c44411 | 74a16e062b23332d8db017ff4a41e16279c44411 |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < 944b8be08131f5faf2cd2440aa1c24a39a163a54 | 944b8be08131f5faf2cd2440aa1c24a39a163a54 |
| linux | linux | >= d4e0fe01a38a073568aee541a0247fe734095979 < b6d335a60dc624c0d279333b22c737faa765b028 | b6d335a60dc624c0d279333b22c737faa765b028 |
| linux | linux_kernel | >= 0 < 5.10.92-1 | 5.10.92-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 4.4.0-273.307 | 4.4.0-273.307 |
| linux | linux_kernel | >= 2.6.30 < 4.4.296 | 4.4.296 |
| linux | linux_kernel | >= 4.10 < 4.14.259 | 4.14.259 |
| linux | linux_kernel | >= 4.15 < 4.19.222 | 4.19.222 |
| linux | linux_kernel | >= 4.20 < 5.4.168 | 5.4.168 |
| linux | linux_kernel | >= 4.5 < 4.9.294 | 4.9.294 |
| linux | linux_kernel | >= 5.11 < 5.15.11 | 5.15.11 |
| linux | linux_kernel | >= 5.5 < 5.10.88 | 5.10.88 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu5.5MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
linux-fips vulnerabilities
osv·2025-11-10·CVSS 5.5
CVE-2025-40300 [MEDIUM] linux-fips vulnerabilities
linux-fips vulnerabilities
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- DMA engine subsystem;
- GPU drivers;
- HSI subsystem;
- Media drivers;
- Network drivers;
- Ethernet team driver;
- TTY drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network fi
OSV
linux-aws vulnerabilities
osv·2025-10-21·CVSS 5.5
CVE-2025-38618 [MEDIUM] linux-aws vulnerabilities
linux-aws vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2025-38618, CVE-2024-35849, CVE-2025-37785, CVE-2024-49924,
CVE-2025-38617, CVE-2024-27078, CVE-2021-47149, CVE-2021-47319,
CVE-2025-21796, CVE-2021-47589)
OSV
linux, linux-kvm vulnerabilities
osv·2025-10-02·CVSS 5.5
CVE-2025-38618 [MEDIUM] linux, linux-kvm vulnerabilities
linux, linux-kvm vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2025-38618, CVE-2024-35849, CVE-2025-37785, CVE-2024-49924,
CVE-2025-38617, CVE-2024-27078, CVE-2021-47149, CVE-2021-47319,
CVE-2025-21796, CVE-2021-47589)
OSV
linux-aws, linux-lts-xenial vulnerabilities
osv·2025-10-02·CVSS 5.5
CVE-2024-49924 [MEDIUM] linux-aws, linux-lts-xenial vulnerabilities
linux-aws, linux-lts-xenial vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2024-49924, CVE-2021-47149, CVE-2025-21796, CVE-2025-38617,
CVE-2021-47589, CVE-2021-47319, CVE-2024-27078, CVE-2025-38618,
CVE-2025-37785, CVE-2024-35849)
OSV
CVE-2021-47589: In the Linux kernel, the following vulnerability has been resolved: igbvf: fix double free in `igbvf_probe` In `igbvf_probe`, if register_netdev() fai
osv·2024-06-19·CVSS 7.8
CVE-2021-47589 [HIGH] CVE-2021-47589: In the Linux kernel, the following vulnerability has been resolved: igbvf: fix double free in `igbvf_probe` In `igbvf_probe`, if register_netdev() fai
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/
GHSA
GHSA-j6pm-8m22-4px5: In the Linux kernel, the following vulnerability has been resolved:
igbvf: fix double free in `igbvf_probe`
In `igbvf_probe`, if register_netdev() f
ghsa_unreviewed·2024-06-19
CVE-2021-47589 [HIGH] CWE-415 GHSA-j6pm-8m22-4px5: In the Linux kernel, the following vulnerability has been resolved:
igbvf: fix double free in `igbvf_probe`
In `igbvf_probe`, if register_netdev() f
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+0
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2025-11-10·CVSS 5.5
CVE-2025-38617 [MEDIUM] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- DMA engine subsystem;
- GPU drivers;
- HSI subsystem;
- Media drivers;
- Network drivers;
- Ethernet team driver;
- TTY d
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2025-10-21·CVSS 5.5
CVE-2021-47149 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2025-38618, CVE-2024-35849, CVE-2025-37785, CVE-2024-49924,
CVE-2025-38617, CVE-2024-27078, CVE-2021-47149, CVE-2021-47319,
CVE-2025-21796, CVE-2021-47589)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-38617 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2025-38618, CVE-2024-35849, CVE-2025-37785, CVE-2024-49924,
CVE-2025-38617, CVE-2024-27078, CVE-2021-47149, CVE-2021-47319,
CVE-2025-21796, CVE-2021-47589)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-38618 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Virtio block driver;
- Media drivers;
- Network drivers;
- Framebuffer layer;
- BTRFS file system;
- Ext4 file system;
- Network file system (NFS) server daemon;
- Packet sockets;
- VMware vSockets driver;
(CVE-2024-49924, CVE-2021-47149, CVE-2025-21796, CVE-2025-38617,
CVE-2021-47589, CVE-2021-47319, CVE-2024-27078, CVE-2025-38618,
CVE-2025-37785, CVE-2024-35849)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable
Red Hat
kernel: igbvf: fix double free in `igbvf_probe`
vendor_redhat·2024-06-19·CVSS 7.8
CVE-2021-47589 [HIGH] CWE-415 kernel: igbvf: fix double free in `igbvf_probe`
kernel: igbvf: fix double free in `igbvf_probe`
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]
Debian
CVE-2021-47589: linux - In the Linux kernel, the following vulnerability has been resolved: igbvf: fix ...
vendor_debian·2021·CVSS 7.8
CVE-2021-47589 [HIGH] CVE-2021-47589: linux - In the Linux kernel, the following vulnerability has been resolved: igbvf: fix ...
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/
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/74a16e062b23332d8db017ff4a41e16279c44411https://git.kernel.org/stable/c/79d9b092035dcdbe636b70433149df9cc6db1e49https://git.kernel.org/stable/c/8addba6cab94ce01686ea2e80ed1530f9dc33a9ahttps://git.kernel.org/stable/c/8d0c927a9fb2b4065230936b77b54f857a3754fchttps://git.kernel.org/stable/c/944b8be08131f5faf2cd2440aa1c24a39a163a54https://git.kernel.org/stable/c/b6d335a60dc624c0d279333b22c737faa765b028https://git.kernel.org/stable/c/cc9b655bb84f1be283293dfea94dff9a31b106achttps://git.kernel.org/stable/c/ffe1695b678729edec04037e691007900a2b2bebhttps://git.kernel.org/stable/c/74a16e062b23332d8db017ff4a41e16279c44411https://git.kernel.org/stable/c/79d9b092035dcdbe636b70433149df9cc6db1e49https://git.kernel.org/stable/c/8addba6cab94ce01686ea2e80ed1530f9dc33a9ahttps://git.kernel.org/stable/c/8d0c927a9fb2b4065230936b77b54f857a3754fchttps://git.kernel.org/stable/c/944b8be08131f5faf2cd2440aa1c24a39a163a54https://git.kernel.org/stable/c/b6d335a60dc624c0d279333b22c737faa765b028https://git.kernel.org/stable/c/cc9b655bb84f1be283293dfea94dff9a31b106achttps://git.kernel.org/stable/c/ffe1695b678729edec04037e691007900a2b2beb
2024-06-19
Published