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  4. CVE 2022 50421 rpmsg char avoid double destroy of default
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Back to active CVEs
High · CVSS 7.8CVE-2022-50421

rpmsg: char: Avoid double destroy of default endpointCVE-2022-50421

Answer in brief

CVE-2022-50421 records a High severity (CVSS 7.8) vulnerability in rpmsg: char: Avoid double destroy of default endpoint. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2025Updated Aug 5, 2026Source checked Nov 3, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=bea9b79c2d10fecf7bfa26e212ecefe61d232e39 <ef828a39d6a7028836eaf37df3ad568c8c2dd6f9 || >=bea9b79c2d10fecf7bfa26e212ecefe61d232e39 <3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb || >=bea9b79c2d10fecf7bfa26e212ecefe61d232e39 <467233a4ac29b215d492843d067a9f091e6bf0c5ef828a39d6a7028836eaf37df3ad568c8c2dd6f9, 3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb, 467233a4ac29b215d492843d067a9f091e6bf0c5
Linux/Linuxgeneric5.18Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to ef828a39d6a7028836eaf37df3ad568c8c2dd6f9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 1, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Avoid double destroy of default endpoint The rpmsg_dev_remove() in rpmsg_core is the place for releasing this default endpoint. So need to avoid destroying the default endpoint in rpmsg_chrdev_eptdev_destroy(), this should be the same as rpmsg_eptdev_release(). Otherwise there will be double destroy issue that ept->refcount report warning: refcount_t: underflow; use-after-free. Call trace: refcount_warn_saturate+0xf8/0x150 virtio_rpmsg_destroy_ept+0xd4/0xec rpmsg_dev_remove+0x60/0x70 The issue can be reproduced by stopping remoteproc before closing the /dev/rpmsgX.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Use-after-free vulnerability in GitHub Enterprise Server allowed remote code execution in the Git serviceAlso CWE-416

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416
Source
CVE List V5
Source checked
Nov 3, 2026
References
3 linked sources
Open source record