Integer overflow in Linux kernel - CVE-2026-98902

Vulnerability identifier: #VU157603

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98902

CWE-ID: CWE-190

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to interfere with RAID5 stripe batching, potentially compromising storage consistency.

The vulnerability exists due to integer wraparound and an incorrect sequence-number comparison in the Linux kernel RAID5 stripe batching logic when a 32-bit sequence counter wraps. A local user can potentially exercise stripe batching across this wraparound condition to cause newer bm_seq values to be treated as older values, potentially compromising storage consistency.

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/00e93faf4cea9e8802ac5dfee0952d84fc95c40f
• https://git.kernel.org/stable/c/2fdc51228d9a8cad2d727d5aef732cc66fc6d56e
• https://git.kernel.org/stable/c/628b14d0744bd5dfe176ea93559071cdcde14255
• https://git.kernel.org/stable/c/647c7289a3960118e249c0a53da6f1ebba1e47a3
• https://git.kernel.org/stable/c/c5c89e1a872a84019f674f5107111e6e6b7cc30f
• https://git.kernel.org/stable/c/cc8eb1715673de850f14376782151f68f73ae3ce
• https://git.kernel.org/stable/c/ffdd3aee932fc293456678f6b0200ffe9bf12a6d

• Integer overflow in Linux kernel md 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