Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: gve: Fix stats report corruption on queue count change The driver and the NIC… (CVE-2026-23262)
A vulnerability in the Linux kernel's gve driver caused memory corruption due to improper handling of stats reporting when the queue count changes. The NIC could write beyond the allocated stats region if the queue count increased, or cause incorrect stats reporting if decreased. This issue has been fixed by allocating the stats region with maximum size and adjusting the NIC stats offset calculation. The vulnerability affects certain versions of the linux-hwe-edge kernel prior to specific fixed versions. A patch is available and should be applied via standard system updates, followed by a reboot. The update requires recompilation of third-party kernel modules due to an ABI change.
AI Analysis
Technical Summary
The Linux kernel vulnerability CVE-2026-23262 involves the gve driver and NIC sharing a memory region for stats reporting. When the number of queues changes, the driver's stats region is resized, but the NIC calculates offsets based on the total size and its own stats size. If the queue count increases, the NIC may write past the allocated stats region, causing memory corruption. If decreased, a gap causes incorrect stats reporting. The fix involves allocating the stats region at maximum size and modifying the NIC offset calculation to align with the NIC's computation, preventing out-of-bounds writes and ensuring correct stats reporting. This vulnerability has been resolved in linux-hwe-edge kernel versions 5.15.0-1111.118~20.04.1 and later.
Potential Impact
Successful exploitation could lead to memory corruption in the kernel space, potentially causing system instability, incorrect network statistics, or other unpredictable behavior. The CVSS score of 7.8 indicates high impact on confidentiality, integrity, and availability. However, no known exploits in the wild have been reported. The vulnerability requires local privileges and low complexity to exploit.
Mitigation Recommendations
A patch is available and should be applied by updating the Linux kernel to versions 5.15.0-1111.118~20.04.1 or later as provided by the vendor. After updating, a system reboot is required to apply the changes. Due to an ABI change, all third-party kernel modules must be recompiled and reinstalled. Follow the vendor's official update instructions and use standard system update mechanisms to obtain the fix.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: gve: Fix stats report corruption on queue count change The driver and the NIC… (CVE-2026-23262)
Description
A vulnerability in the Linux kernel's gve driver caused memory corruption due to improper handling of stats reporting when the queue count changes. The NIC could write beyond the allocated stats region if the queue count increased, or cause incorrect stats reporting if decreased. This issue has been fixed by allocating the stats region with maximum size and adjusting the NIC stats offset calculation. The vulnerability affects certain versions of the linux-hwe-edge kernel prior to specific fixed versions. A patch is available and should be applied via standard system updates, followed by a reboot. The update requires recompilation of third-party kernel modules due to an ABI change.
CVSS v3.1
Score 7.8high
Affected software
pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.2?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.2?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email 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]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=esm-infra/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 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=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=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 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]+fips1?arch=source&distro=fips-updates/focalpkg:deb/ubuntu/[email 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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 protected]~22.04.1?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]~22.04.1?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=bluefield/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-preview/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-preview/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-preview/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-preview/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/jammypkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/jammypkg:deb/ubuntu/[email 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 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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-2026-23262 involves the gve driver and NIC sharing a memory region for stats reporting. When the number of queues changes, the driver's stats region is resized, but the NIC calculates offsets based on the total size and its own stats size. If the queue count increases, the NIC may write past the allocated stats region, causing memory corruption. If decreased, a gap causes incorrect stats reporting. The fix involves allocating the stats region at maximum size and modifying the NIC offset calculation to align with the NIC's computation, preventing out-of-bounds writes and ensuring correct stats reporting. This vulnerability has been resolved in linux-hwe-edge kernel versions 5.15.0-1111.118~20.04.1 and later.
Potential Impact
Successful exploitation could lead to memory corruption in the kernel space, potentially causing system instability, incorrect network statistics, or other unpredictable behavior. The CVSS score of 7.8 indicates high impact on confidentiality, integrity, and availability. However, no known exploits in the wild have been reported. The vulnerability requires local privileges and low complexity to exploit.
Mitigation Recommendations
A patch is available and should be applied by updating the Linux kernel to versions 5.15.0-1111.118~20.04.1 or later as provided by the vendor. After updating, a system reboot is required to apply the changes. Due to an ABI change, all third-party kernel modules must be recompiled and reinstalled. Follow the vendor's official update instructions and use standard system update mechanisms to obtain the fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-23262
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:FIPS-updates: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"]
- Cvss Version
- 3.1
Threat ID: 6a58b4e168715ace43daf16f
Added to database: 07/16/2026, 10:39:29 UTC
Last enriched: 08/01/2026, 06:54:52 UTC
Last updated: 09/14/2026, 22:01:32 UTC
Views: 28
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