Out-of-bounds read in Linux kernel - CVE-2026-72210

Vulnerability identifier: #VU143387

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72210

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in ntfs_mapping_pairs_decompress() when parsing crafted NTFS mapping pair data. A local user can provide a crafted NTFS attribute record to disclose sensitive information.

The issue is caused by off-by-one bounds checks when the parsed data extends exactly to the end of the attribute record.

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel - update to 5.10.0-340.0.0.241
bpftool - update to 5.10.0-340.0.0.241
bpftool-debuginfo - update to 5.10.0-340.0.0.241
kernel-debuginfo - update to 5.10.0-340.0.0.241
kernel-debugsource - update to 5.10.0-340.0.0.241
kernel-devel - update to 5.10.0-340.0.0.241
kernel-headers - update to 5.10.0-340.0.0.241
kernel-source - update to 5.10.0-340.0.0.241
kernel-tools - update to 5.10.0-340.0.0.241
kernel-tools-debuginfo - update to 5.10.0-340.0.0.241
kernel-tools-devel - update to 5.10.0-340.0.0.241
perf - update to 5.10.0-340.0.0.241
perf-debuginfo - update to 5.10.0-340.0.0.241
python3-perf - update to 5.10.0-340.0.0.241
python3-perf-debuginfo - update to 5.10.0-340.0.0.241

• https://git.kernel.org/stable/c/18760a74ef7c28df93726445b5595162e62ed341
• https://git.kernel.org/stable/c/bfe835e535fe0aa5767fdd8116f62e835ba50b55

• Out-of-bounds read in Linux kernel ntfs
• openEuler 22.03 LTS SP4 update for kernel