CVE-2022-50421 — Use After Free in Linux

CWE-416 — Use After FreeCWE-1341 — Multiple Releases of Same Resource or Handle5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 98.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 1

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_saturat…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel5.18 — 5.19.17+1
▶Debianlinux/linux_kernel< 6.0.3-1+2
▶CVEListV5linux/linuxbea9b79c2d10fecf7bfa26e212ecefe61d232e39 — ef828a39d6a7028836eaf37df3ad568c8c2dd6f9+3
▶debiandebian/linux< linux 6.0.3-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-7gv2-7hhr-4fm9: In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Avoid double destroy of default endpoint The rpmsg_dev_remove() in↗2025-10-01
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OSV
CVE-2022-50421: In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Avoid double destroy of default endpoint The rpmsg_dev_remove() in rp↗2025-10-01
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📋Vendor Advisories

2
Red Hat
kernel: rpmsg: char: Avoid double destroy of default endpoint↗2025-10-01
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Debian
CVE-2022-50421: linux - In the Linux kernel, the following vulnerability has been resolved: rpmsg: char...↗2022
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