CVE-2023-2680: Dma reentrancy issue (incomplete fix for cve-2021-3750)

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• qemu qemuall versions
• redhat enterprise linux9.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

• Fedora Extra Packages for Enterprise Linux

  • all versionsunknown

• Fedora Fedora

  • all versionsunknown

• n/a qemu

  • all versionsaffected

• Red Hat Red Hat Enterprise Linux 6

  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 7

  • all versionsunknown
  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 8

  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization

  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 9

  • all versionsaffected

• Red Hat Red Hat OpenStack Platform 13 (Queens)

  • all versionsunknown

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2019-12928The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command injection, which allows the remote attacker to achieve
  60This week
• CVE-2015-8556Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
  44Plan
• CVE-2017-15118A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an expor
  43Plan

Published before and after this one in the same product

• ← EarlierCVE-2020-24165Aug 28, 2023 · An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a
  35Monitor
• ← EarlierCVE-2023-42467Sep 11, 2023 · QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not
  22Monitor
• Later →CVE-2023-3255Sep 13, 2023 · Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service
  27Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.