01 Record

CVE-2025-38349

eventpoll: don't decrement ep refcount while still holding the ep mutex

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

eventpoll: don't decrement ep refcount while still holding the ep mutex

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.1% 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

Modified. NVD last modified this record on 2026-07-30.

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

2025-07-18 07:53Z1 YR AGO

Last updated

2026-08-05 12:01Z1 MO AGO

Reserved

2025-04-16

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
CWE-366Race Condition within a ThreadBase

Data version

5.2

Document digest

95f5c67d207fd853c9c4eb4acbfee5bb2afa8f29bfa64afcdaecbe8196fb0553

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa1f93804449d13f97dabd4b996817de4bf1ed67a to < b0821ec902d39062356cb644c16e17a705d1c9f5, 58c9b016e12855286370dfb704c08498edbc857a to < 521e9ff0b67c66a17d6f9593dfccafaa984aae4c, 58c9b016e12855286370dfb704c08498edbc857a to < 6dee745bd0aec9d399df674256e7b1ecdb615444, 58c9b016e12855286370dfb704c08498edbc857a to < 605c18698ecfa99165f36b7f59d3ed503e169814, 58c9b016e12855286370dfb704c08498edbc857a to < 8c2e52ebbe885c7eeaabd3b7ddcdc1246fc400d2, f2451def095c1743adcfcb0cb5dadc86034e162a, 6.1.175 to < 6.1.178, 5.15.209 to < 5.16, 6.4—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/b0821ec902d39062356cb644c16e17a705d1c9f5
git.kernel.orghttps://git.kernel.org/stable/c/521e9ff0b67c66a17d6f9593dfccafaa984aae4c
git.kernel.orghttps://git.kernel.org/stable/c/6dee745bd0aec9d399df674256e7b1ecdb615444
git.kernel.orghttps://git.kernel.org/stable/c/605c18698ecfa99165f36b7f59d3ed503e169814
git.kernel.orghttps://git.kernel.org/stable/c/8c2e52ebbe885c7eeaabd3b7ddcdc1246fc400d2
project-zero.issues.chromium.orghttps://project-zero.issues.chromium.org/issues/430541637

01 Record index

CVE-2025-38349

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-38349

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References