CVE-2022-50421
- Source
- https://nvd.nist.gov/vuln/detail/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
- 2025-10-01T11:41:54Z
- Modified
- 2025-10-16T09:08:53.300488Z
- 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.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbea9b79c2d10fecf7bfa26e212ecefe61d232e39Fixedef828a39d6a7028836eaf37df3ad568c8c2dd6f9
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbea9b79c2d10fecf7bfa26e212ecefe61d232e39Fixed3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbea9b79c2d10fecf7bfa26e212ecefe61d232e39Fixed467233a4ac29b215d492843d067a9f091e6bf0c5
Affected versions
v5.*
v5.17
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.19.1
v5.19.10
v5.19.11
v5.19.12
v5.19.13
v5.19.14
v5.19.15
v5.19.16
v5.19.2
v5.19.3
v5.19.4
v5.19.5
v5.19.6
v5.19.7
v5.19.8
v5.19.9
v6.*
v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.0.1
v6.0.2