Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Pass netdev to mlx5e_destroy_netdev instead of priv mlx5e_priv is an… (CVE-2026-23035)
A vulnerability in the Linux kernel's mlx5e network driver was resolved by changing the way netdev is passed to the mlx5e_destroy_netdev function. The previous method used an unstable structure that could be zeroed out if profile attaching failed, causing kernel oops during device removal. This fix ensures proper handling of resources during failure scenarios. The issue is part of a broader set of Linux kernel security fixes addressing multiple subsystems. The vulnerability affects certain versions of the linux-hwe-edge kernel prior to 6.8.0-1055.56 and related versions. A patch is available and users are advised to update to fixed kernel versions and reboot. The severity of this vulnerability is assessed as medium.
AI Analysis
Technical Summary
The Linux kernel vulnerability CVE-2026-23035 involves the mlx5e network driver where the function mlx5e_destroy_netdev was incorrectly passed a priv mlx5e_priv structure, which is unstable and can be zeroed if profile attaching fails. This could cause a kernel oops during mlx5e_remove when switchdev mode fails due to profile change failure. The fix involves passing the netdev structure directly to mlx5e_destroy_netdev and checking the validity of priv->profile before cleanup. This resolves the kernel oops issue. The vulnerability is part of a larger set of Linux kernel security fixes addressing multiple subsystems and drivers. The patch is included in updated linux-hwe-edge kernel packages for Ubuntu 22.04 LTS and related releases.
Potential Impact
If unpatched, the vulnerability can cause a kernel oops (crash) in the mlx5e network driver during device removal when switchdev mode fails. This could lead to system instability or denial of service. No known exploits are reported in the wild. The issue does not directly enable privilege escalation or code execution but affects kernel stability under specific failure conditions.
Mitigation Recommendations
A patch is available and included in updated linux-hwe-edge kernel packages for Ubuntu 22.04 LTS and related releases. Users should update their systems to the fixed kernel versions listed in the vendor advisory and reboot to apply the changes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. No additional mitigation is necessary beyond applying the official update.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Pass netdev to mlx5e_destroy_netdev instead of priv mlx5e_priv is an… (CVE-2026-23035)
Description
A vulnerability in the Linux kernel's mlx5e network driver was resolved by changing the way netdev is passed to the mlx5e_destroy_netdev function. The previous method used an unstable structure that could be zeroed out if profile attaching failed, causing kernel oops during device removal. This fix ensures proper handling of resources during failure scenarios. The issue is part of a broader set of Linux kernel security fixes addressing multiple subsystems. The vulnerability affects certain versions of the linux-hwe-edge kernel prior to 6.8.0-1055.56 and related versions. A patch is available and users are advised to update to fixed kernel versions and reboot. The severity of this vulnerability is assessed as medium.
Affected software
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protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.2?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]+cvm1.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.3?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email 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protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email 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protected]+fips1?arch=source&distro=fips-updates/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email 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protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=bluefield/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=realtime/noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=realtime/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingRun on your own infrastructure? 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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability CVE-2026-23035 involves the mlx5e network driver where the function mlx5e_destroy_netdev was incorrectly passed a priv mlx5e_priv structure, which is unstable and can be zeroed if profile attaching fails. This could cause a kernel oops during mlx5e_remove when switchdev mode fails due to profile change failure. The fix involves passing the netdev structure directly to mlx5e_destroy_netdev and checking the validity of priv->profile before cleanup. This resolves the kernel oops issue. The vulnerability is part of a larger set of Linux kernel security fixes addressing multiple subsystems and drivers. The patch is included in updated linux-hwe-edge kernel packages for Ubuntu 22.04 LTS and related releases.
Potential Impact
If unpatched, the vulnerability can cause a kernel oops (crash) in the mlx5e network driver during device removal when switchdev mode fails. This could lead to system instability or denial of service. No known exploits are reported in the wild. The issue does not directly enable privilege escalation or code execution but affects kernel stability under specific failure conditions.
Mitigation Recommendations
A patch is available and included in updated linux-hwe-edge kernel packages for Ubuntu 22.04 LTS and related releases. Users should update their systems to the fixed kernel versions listed in the vendor advisory and reboot to apply the changes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. No additional mitigation is necessary beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-23035
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:Nvidia-BlueField:22.04:LTS","Ubuntu:Pro:FIPS-preview:22.04:LTS","Ubuntu:Pro:FIPS-updates:22.04:LTS","Ubuntu:Pro:Realtime:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Nvidia-BlueField:24.04:LTS","Ubuntu:Pro:FIPS-updates:24.04:LTS","Ubuntu:Pro:Realtime:24.04:LTS","Ubuntu:25.10"]
Threat ID: 6a5b63672d1edb114c8b3e80
Added to database: 07/18/2026, 11:28:40 UTC
Last enriched: 08/22/2026, 21:36:28 UTC
Last updated: 09/10/2026, 19:24:58 UTC
Views: 7
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