CVE-2022-50421
- Source
- https://cve.org/CVERecord?id=CVE-2022-50421
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50421.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-50421
- Downstream
- Published
- 2025-10-01T11:41:54.351Z
- Modified
- 2026-03-20T11:47:26.954252Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- rpmsg: char: Avoid double destroy of default endpoint
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
rpmsg: char: Avoid double destroy of default endpoint
The rpmsgdevremove() in rpmsg_core is the place for releasing this default endpoint.
So need to avoid destroying the default endpoint in rpmsgchrdeveptdevdestroy(), this should be the same as rpmsgeptdev_release(). Otherwise there will be double destroy issue that ept->refcount report warning:
refcount_t: underflow; use-after-free.
Call trace: refcountwarnsaturate+0xf8/0x150 virtiorpmsgdestroyept+0xd4/0xec rpmsgdev_remove+0x60/0x70
The issue can be reproduced by stopping remoteproc before closing the /dev/rpmsgX.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50421.json" }- References
-
- https://git.kernel.org/stable/c/3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb
- https://git.kernel.org/stable/c/467233a4ac29b215d492843d067a9f091e6bf0c5
- https://git.kernel.org/stable/c/ef828a39d6a7028836eaf37df3ad568c8c2dd6f9
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50421.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50421
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git