CVE-2022-48863

mISDN: Fix memory leak in dsp_pipeline_build()

MEDIUM
5.5
CVSS Score
Published: July 16, 2024 at 12:25 PM UTC
Updated: June 17, 2026 at 05:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: mISDN: Fix memory leak in dsp_pipeline_build() dsp_pipeline_build() allocates dup pointer by kstrdup(cfg), but then it updates dup variable by strsep(&dup, "|"). As a result when it calls kfree(dup), the dup variable contains NULL. Found by Linux Driver Verification project (linuxtesting.org) with SVACE.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.6.27 ≤ v < 5.10.1062.6.27 ≤ v < 5.15.292.6.27 ≤ v < 5.16.152.6.27 ≤ v < 5.175.11 ≤ v < 5.15.295.16 ≤ v < 5.16.152.6.27960366cf8dbb3359afaca30cf7fdbf69a6d6dda7
Vendor states this is fixed in 640445d6fc059d4514ffea79eb4196299e0e2d0f (fixed)
Vendor states this is fixed in 7777b1f795af1bb43867375d8a776080111aae1b (fixed)
Vendor states this is fixed in a3d5fcc6cf2ecbba5a269631092570aa285a24cb (fixed)
Vendor states this is fixed in c6a502c2299941c8326d029cfc8a3bc8a4607ad5 (fixed)
Vendor states this is fixed in 2.6.27 (unaffected)
Vendor states this is fixed in 5.10.106 (unaffected)
Vendor states this is fixed in 5.15.29 (unaffected)
Vendor states this is fixed in 5.16.15 (unaffected)
Vendor states this is fixed in 5.17 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/640445d6fc059d4514ffea79eb4196299e0e2d0f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7777b1f795af1bb43867375d8a776080111aae1b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a3d5fcc6cf2ecbba5a269631092570aa285a24cb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c6a502c2299941c8326d029cfc8a3bc8a4607ad5

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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