Allocation of Resources Without Limits or Throttling in Linux kernel - CVE-2026-53132

Vulnerability identifier: #VU135652

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-2026-53132

CWE-ID: CWE-770

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to improper resource management in virtio_transport_inc_rx_pkt() and the virtio vsock receive queue when processing crafted packets with zero-length payloads and the VIRTIO_VSOCK_SEQ_EOM flag. A local user can send a large number of specially crafted packets to cause a denial of service.

The issue occurs because queued packets may not increase the tracked byte count, allowing the receive queue to grow excessively.

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 6.6.0-145.1.20.157
bpftool - update to 6.6.0-145.1.20.157
bpftool-debuginfo - update to 6.6.0-145.1.20.157
kernel-debuginfo - update to 6.6.0-145.1.20.157
kernel-debugsource - update to 6.6.0-145.1.20.157
kernel-devel - update to 6.6.0-145.1.20.157
kernel-headers - update to 6.6.0-145.1.20.157
kernel-source - update to 6.6.0-145.1.20.157
kernel-tools - update to 6.6.0-145.1.20.157
kernel-tools-debuginfo - update to 6.6.0-145.1.20.157
kernel-tools-devel - update to 6.6.0-145.1.20.157
perf - update to 6.6.0-145.1.20.157
perf-debuginfo - update to 6.6.0-145.1.20.157
python3-perf - update to 6.6.0-145.1.20.157
python3-perf-debuginfo - update to 6.6.0-145.1.20.157

• https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5
• https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c
• https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12
• https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5

• Allocation of Resources Without Limits or Throttling in Linux kernel vmw_vsock
• openEuler 24.03 LTS SP1 update for kernel