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CVE-2026-22996— net/mlx5e: Don't store mlx5e_priv in mlx5e_dev devlink priv

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存储不稳定结构，可能导致内核崩溃。

AI Predicted 7.8 Difficulty: Easy EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1053.008

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux c4d7eb57687f358cd498ea3624519236af8db97e< dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fe affected
c4d7eb57687f358cd498ea3624519236af8db97e< a3d4f87d41f5140f1cf5c02fce5cdad2637f6244 affected
c4d7eb57687f358cd498ea3624519236af8db97e< 123eda2e5b1638e298e3a66bb1e64a8da92de5e1 affected
5.12 affected
< 5.12 unaffected
6.12.67≤ 6.12.* unaffected
6.18.7≤ 6.18.* unaffected
6.19≤ * unaffected
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I. Basic Information for CVE-2026-22996

Vulnerability Information
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Vulnerability Title
net/mlx5e: Don't store mlx5e_priv in mlx5e_dev devlink priv
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Don't store mlx5e_priv in mlx5e_dev devlink priv mlx5e_priv is an unstable structure that can be memset(0) if profile attaching fails, mlx5e_priv in mlx5e_dev devlink private is used to reference the netdev and mdev associated with that struct. Instead, store netdev directly into mlx5e_dev and get mdev from the containing mlx5_adev aux device structure. This fixes a kernel oops in mlx5e_remove when switchdev mode fails due to change profile failure. $ devlink dev eswitch set pci/0000:00:03.0 mode switchdev Error: mlx5_core: Failed setting eswitch to offloads. dmesg: workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR mlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12 mlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: new profile init failed, -12 workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR mlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12 mlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12 $ devlink dev reload pci/0000:00:03.0 ==> oops BUG: kernel NULL pointer dereference, address: 0000000000000520 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 3 UID: 0 PID: 521 Comm: devlink Not tainted 6.18.0-rc5+ #117 PREEMPT(voluntary) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 RIP: 0010:mlx5e_remove+0x68/0x130 RSP: 0018:ffffc900034838f0 EFLAGS: 00010246 RAX: ffff88810283c380 RBX: ffff888101874400 RCX: ffffffff826ffc45 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888102d789c0 R08: ffff8881007137f0 R09: ffff888100264e10 R10: ffffc90003483898 R11: ffffc900034838a0 R12: ffff888100d261a0 R13: ffff888100d261a0 R14: ffff8881018749a0 R15: ffff888101874400 FS: 00007f8565fea740(0000) GS:ffff88856a759000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000520 CR3: 000000010b11a004 CR4: 0000000000370ef0 Call Trace: <TASK> device_release_driver_internal+0x19c/0x200 bus_remove_device+0xc6/0x130 device_del+0x160/0x3d0 ? devl_param_driverinit_value_get+0x2d/0x90 mlx5_detach_device+0x89/0xe0 mlx5_unload_one_devl_locked+0x3a/0x70 mlx5_devlink_reload_down+0xc8/0x220 devlink_reload+0x7d/0x260 devlink_nl_reload_doit+0x45b/0x5a0 genl_family_rcv_msg_doit+0xe8/0x140
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存储不稳定结构，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c4d7eb57687f358cd498ea3624519236af8db97e ~ dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fe -
Linux Linux 5.12 -

II. Public POCs for CVE-2026-22996

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III. Intelligence Information for CVE-2026-22996

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Same Patch Batch · Linux · 2026-01-25 · 20 CVEs total

CVE-2026-23004 7.8 HIGH dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list()
CVE-2025-71162 7.8 HIGH dmaengine: tegra-adma: Fix use-after-free
CVE-2026-22999 7.8 HIGH net/sched: sch_qfq: do not free existing class in qfq_change_class()
CVE-2026-23001 7.8 HIGH macvlan: fix possible UAF in macvlan_forward_source()
CVE-2026-23010 7.8 HIGH ipv6: Fix use-after-free in inet6_addr_del().
CVE-2026-23003 7.5 HIGH ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()
CVE-2026-22998 7.5 HIGH nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec
CVE-2026-22997 7.5 HIGH net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the
CVE-2026-23013 7.0 HIGH net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback
CVE-2026-23009 xhci: sideband: don't dereference freed ring when removing sideband endpoint
CVE-2026-23008 drm/vmwgfx: Fix KMS with 3D on HW version 10
CVE-2026-23007 block: zero non-PI portion of auto integrity buffer
CVE-2026-23006 ASoC: tlv320adcx140: fix null pointer
CVE-2026-23005 x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1
CVE-2026-23002 lib/buildid: use __kernel_read() for sleepable context
CVE-2026-23000 net/mlx5e: Fix crash on profile change rollback failure
CVE-2026-23011 ipv4: ip_gre: make ipgre_header() robust
CVE-2025-71163 dmaengine: idxd: fix device leaks on compat bind and unbind
CVE-2026-23012 mm/damon/core: remove call_control in inactive contexts

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-22996

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