SECUFOCUSNOW
Home›CVE index›CVE-2022-49939
Review reviewHigh

CVE-2022-49939

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF of ref->proc caused by race condition A transaction of type BINDER_TYPE_WEAK_HANDLE can fail to increment the reference for a node. In this case, the target proc normally releases the failed reference upon close as expected. However, if the target is dying in parallel the call will race with binder_deferred_release(), so the target could have released all of its references by now leaving the cleanup of the new failed reference unhandled. The transaction then ends and the target proc gets released making the...

CVSS
7
EPSS
0.14%
3.94% percentile
CISA KEV
Not listed
Published
2025.06.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF of ref->proc caused by race condition A transaction of type BINDER_TYPE_WEAK_HANDLE can fail to increment the reference for a node. In this case, the target proc normally releases the failed reference upon close as expected. However, if the target is dying in parallel the call will race with binder_deferred_release(), so the target could have released all of its references by now leaving the cleanup of the new failed reference unhandled. The transaction then ends and the target proc gets released making the...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 372e3147df7016ebeaa372939e8774a1292db558 < 229f47603dd306bc0eb1a831439adb8e48bb0eae, >= 372e3147df7016ebeaa372939e8774a1292db558 < 06e5b43ca4dab06a92bf4c2f33766e6fb11b880a, >= 372e3147df7016ebeaa372939e8774a1292db558 < 30d0901b307f27d36b2655fb3048cf31ee0e89c0, >= 372e3147df7016ebeaa372939e8774a1292db558 < 9629f2dfdb1dad294b468038ff8e161e94d0b609, >= 372e3147df7016ebeaa372939e8774a1292db558 < c2a4b5dc8fa71af73bab704d0cac42ac39767ed6, >= 372e3147df7016ebeaa372939e8774a1292db558 < 603a47f2ae56bf68288784d3c0a8c5b8e0a827ed, >= 372e3147df7016ebeaa372939e8774a1292db558 < a0e44c64b6061dda7e00b7c458e4523e2331b739, >= 4.14, < 4.14.293, >= 4.15 < 4.19.258, >= 4.20 < 5.4.213, >= 5.5 < 5.10.142, >= 5.11 < 5.15.66, >= 5.16 < 5.19.8, 6.0
Fixed versions
4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-362, CWE-416
CVE-2022-49939 — Linux Linux, linux kernel | SECUFOCUS NOW