01 Record

CVE-2022-49753

dmaengine: Fix double increment of client_count in dma_chan_get()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

dmaengine: Fix double increment of client_count in dma_chan_get()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.9% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-03-27 16:43Z1 YR AGO

Last updated

2026-05-11 19:06Z3 MO AGO

Reserved

2025-03-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

5f0a52766d57e3fd62d9e8bc70ae732da590dc18d6be0d967d0a8f830929257e

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < 1b409e14b4b7af034e0450f95c165b6c5c87dbc1, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < c6221afe573413fd2981e291f7df4a58283e0654, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < 18dd3b30d4c7e8440c63118c7a7b687372b9567f, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < 42ecd72f02cd657b00b559621e7ef7d2c4d3e5f1, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < 71c601965532c38030133535f7cd93c1efa75af1, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < 142d644fd2cc059ffa042fbfb68e766433ef3afd, d2f4f99db3e9ec8b063cf2e45704e2bb95428317 to < f3dc1b3b4750851a94212dba249703dd0e50bb20, 4.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/1b409e14b4b7af034e0450f95c165b6c5c87dbc1
git.kernel.orghttps://git.kernel.org/stable/c/c6221afe573413fd2981e291f7df4a58283e0654
git.kernel.orghttps://git.kernel.org/stable/c/18dd3b30d4c7e8440c63118c7a7b687372b9567f
git.kernel.orghttps://git.kernel.org/stable/c/42ecd72f02cd657b00b559621e7ef7d2c4d3e5f1
git.kernel.orghttps://git.kernel.org/stable/c/71c601965532c38030133535f7cd93c1efa75af1
git.kernel.orghttps://git.kernel.org/stable/c/142d644fd2cc059ffa042fbfb68e766433ef3afd
git.kernel.orghttps://git.kernel.org/stable/c/f3dc1b3b4750851a94212dba249703dd0e50bb20

01 Record index

CVE-2022-49753

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2022-49753

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References