Out-of-bounds write in Linux kernel - CVE-2026-98882

Vulnerability identifier: #VU157632

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98882

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to potentially corrupt kernel memory and cause a denial of service.

The vulnerability exists due to insufficient range checking of frame-buffer indices in the Wave5 driver's wave5_vpu_dec_get_output_info() function when processing invalid decoder output information. A local user can potentially trigger an out-of-range frame-buffer access through invalid decoder output information to corrupt kernel memory and cause a denial of service.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (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 (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
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/144f24ec0fc1e51673611912a6d14ded0a61db43
• https://git.kernel.org/stable/c/79aef69bb0903616f4867f0168aea717a11c439c
• https://git.kernel.org/stable/c/d6f777d11c7b34549cdadd8578d4b85f685eb976

• Out-of-bounds write in Linux kernel chips-media wave5 driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more