CVE-2022-50421
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-50421
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50421.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-50421
- Downstream
- Published
- 2025-10-01T11:41:54Z
- Modified
- 2025-10-21T12:52:11.554609Z
- 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
Database specific
vanir_signatures
[
{
"id": "CVE-2022-50421-15d20137",
"target": {
"function": "rpmsg_chrdev_eptdev_destroy",
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb",
"signature_type": "Function",
"digest": {
"function_hash": "67806604135756741912738740695147545156",
"length": 338.0
},
"deprecated": false,
"signature_version": "v1"
},
{
"id": "CVE-2022-50421-6e2a71b2",
"target": {
"function": "rpmsg_chrdev_eptdev_destroy",
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ef828a39d6a7028836eaf37df3ad568c8c2dd6f9",
"signature_type": "Function",
"digest": {
"function_hash": "67806604135756741912738740695147545156",
"length": 338.0
},
"deprecated": false,
"signature_version": "v1"
},
{
"id": "CVE-2022-50421-7012e308",
"target": {
"function": "rpmsg_chrdev_eptdev_destroy",
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@467233a4ac29b215d492843d067a9f091e6bf0c5",
"signature_type": "Function",
"digest": {
"function_hash": "67806604135756741912738740695147545156",
"length": 338.0
},
"deprecated": false,
"signature_version": "v1"
},
{
"id": "CVE-2022-50421-752f62bb",
"target": {
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3f20ef7a845c2c8d7ec82ecffa20d95cab5ecfeb",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"282460863745932472355555463131454235662",
"31349249219595669565506758156419737028",
"39643949646227735841169270447377374033",
"7774210440371439177215656698786097700"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"id": "CVE-2022-50421-94df40fe",
"target": {
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@467233a4ac29b215d492843d067a9f091e6bf0c5",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"282460863745932472355555463131454235662",
"31349249219595669565506758156419737028",
"39643949646227735841169270447377374033",
"7774210440371439177215656698786097700"
]
},
"deprecated": false,
"signature_version": "v1"
},
{
"id": "CVE-2022-50421-c43933e8",
"target": {
"file": "drivers/rpmsg/rpmsg_char.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ef828a39d6a7028836eaf37df3ad568c8c2dd6f9",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"282460863745932472355555463131454235662",
"31349249219595669565506758156419737028",
"39643949646227735841169270447377374033",
"7774210440371439177215656698786097700"
]
},
"deprecated": false,
"signature_version": "v1"
}
]