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CVE-2022-50421 PUBLISHED CVSS 7.8 HIGH

Reported by Linux · Published October 1, 2025

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.

Risk Scores

CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

VendorProductVersions
LinuxLinuxbea9b79c2d10fecf7bfa26e212ecefe61d232e39, bea9b79c2d10fecf7bfa26e212ecefe61d232e39, bea9b79c2d10fecf7bfa26e212ecefe61d232e39
LinuxLinux5.18, 0, 5.19.17
linuxlinux_kernel5.18, 5.18, 5.18
LinuxLinux6.1, bea9b79c2d10fecf7bfa26e212ecefe61d232e39, bea9b79c2d10fecf7bfa26e212ecefe61d232e39

Timeline

References

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