Review reviewHigh

CVE-2022-48873

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Don't remove map on creater_process and device_release Do not remove the map from the list on error path in fastrpc_init_create_process, instead call fastrpc_map_put, to avoid use-after-free. Do not remove it on fastrpc_device_release either, call fastrpc_map_put instead. The fastrpc_free_map is the only proper place to remove the map. This is called only after the reference count is 0.

CVSS
7.8
EPSS
0.24%
15.3% percentile
CISA KEV
Not listed
Published
2024.08.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.24%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Don't remove map on creater_process and device_release Do not remove the map from the list on error path in fastrpc_init_create_process, instead call fastrpc_map_put, to avoid use-after-free. Do not remove it on fastrpc_device_release either, call fastrpc_map_put instead. The fastrpc_free_map is the only proper place to remove the map. This is called only after the reference count is 0.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 < 4b5c44e924a571d0ad07054de549624fbc04e4d7, >= b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 < 193cd853145b63e670bd73740250983af1475330, >= b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 < 1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8, >= b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 < 35ddd482345c43d9eec1f3406c0f20a95ed4054b, >= b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 < 5bb96c8f9268e2fdb0e5321cbc358ee5941efc15, >= aaf5aa44934ad069cac805923c49f6968b9a0d49, >= 5.1.6 < 5.2, >= 5.2, >= 5.2 < 5.4.230, >= 5.5 < 5.10.165, >= 5.11 < 5.15.90, >= 5.16 < 6.1.8, 6.2
Fixed versions
5.4.230, 5.10.165, 5.15.90, 6.1.8

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:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2022-48873 — Linux Linux, linux kernel | SECUFOCUS NOW