Release of invalid pointer or reference in Linux kernel - CVE-2026-98911

Vulnerability identifier: #VU157595

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98911

CWE-ID: CWE-763

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to potentially cause a denial of service.

The vulnerability exists due to an invalid pointer release in the Linux kernel dpaa2-switch driver's dpaa2_switch_rx() function when handling errors during received-frame processing. A remote attacker can potentially trigger the affected error path through network traffic to cause a kernel crash when a receive frame descriptor is incorrectly treated as a transmit frame descriptor and its software annotation data is used as a socket-buffer pointer for deallocation.

Linux kernel
Ubuntu
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - update to 5.15.0-1070.72
linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux (Ubuntu package) - update to 7.0.0-42.42
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17

• https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab
• https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d
• https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db
• https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8
• https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1
• https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3

• Release of invalid pointer or reference in Linux kernel freescale dpaa2 driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• Ubuntu update for linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx
• Ubuntu update for linux, linux-aws, linux-aws-5.15 and more