Incorrect Bitwise Shift of Integer in Linux kernel - CVE-2026-72350

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Main Vulnerability Database Vulnerabilities #VU143088

Incorrect Bitwise Shift of Integer in Linux kernel - CVE-2026-72350

Published: August 16, 2026


Vulnerability identifier: #VU143088
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72350
CWE-ID: CWE-1335
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds shift operation in u32_match_it() in the xt_u32 netfilter match when evaluating a malformed u32 rule during packet processing. A local user can supply a crafted u32 rule with a shift count of 32 or more to cause a denial of service.


Affected software

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

How to mitigate CVE-2026-72350

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel - update to 5.10.0-330.0.0.231
bpftool - update to 5.10.0-330.0.0.231
bpftool-debuginfo - update to 5.10.0-330.0.0.231
kernel-debuginfo - update to 5.10.0-330.0.0.231
kernel-debugsource - update to 5.10.0-330.0.0.231
kernel-devel - update to 5.10.0-330.0.0.231
kernel-headers - update to 5.10.0-330.0.0.231
kernel-source - update to 5.10.0-330.0.0.231
kernel-tools - update to 5.10.0-330.0.0.231
kernel-tools-debuginfo - update to 5.10.0-330.0.0.231
kernel-tools-devel - update to 5.10.0-330.0.0.231
perf - update to 5.10.0-330.0.0.231
perf-debuginfo - update to 5.10.0-330.0.0.231
python3-perf - update to 5.10.0-330.0.0.231
python3-perf-debuginfo - update to 5.10.0-330.0.0.231

External References

Related Security Bulletins