CVE-2026-64173 - Vulnerability Details

- tracing: Do not call map->ops->elt_free() if elt_alloc() fails

Description

In the Linux kernel, the following vulnerability has been resolved:

tracing: Do not call map->ops->elt_free() if elt_alloc() fails

In paths where tracing_map_elt_alloc() failed to allocate objects,
the map->ops->elt_alloc() call was never successful. In this case,
map->ops->elt_free() should not be called.

Published: 2026-07-19

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< 49332e49ad5b20262cc719b03d4123b9362de701
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< b559a218eece132de0c58d444877b5627cbee524
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< b427e9f6d81c9341cba23ef92f860f99f830d91d
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< f383cff9fb382139980bac1bcd3f3f5d59f68435
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< 1a150947f8480262a46c860f1acb9c6597ca7097
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< 798183376d9d3e278a270ea0e75a5769c8f145d9
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< b6723339736320b2e1784258ad4490cec7aac11a
`2734b629525a9dae5bf217cbf0a9651da93d2108`	affected	< 8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03

Linux

affected

Version	Status	Constraints
`4.17`	affected	—
`0`	unaffected	< 4.17
`5.10.258`	unaffected	≤ 5.10.*
`5.15.209`	unaffected	≤ 5.15.*
`6.1.175`	unaffected	≤ 6.1.*
`6.6.142`	unaffected	≤ 6.6.*
`6.12.92`	unaffected	≤ 6.12.*
`6.18.34`	unaffected	≤ 6.18.*
`7.0.11`	unaffected	≤ 7.0.*
`7.1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[2734b629525a9dae5bf217cbf0a9651da93d2108,49332e49ad5b20262cc719b03d4123b9362de701)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,b559a218eece132de0c58d444877b5627cbee524)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,b427e9f6d81c9341cba23ef92f860f99f830d91d)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,f383cff9fb382139980bac1bcd3f3f5d59f68435)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,1a150947f8480262a46c860f1acb9c6597ca7097)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,798183376d9d3e278a270ea0e75a5769c8f145d9)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,b6723339736320b2e1784258ad4490cec7aac11a)`	affected	code_commit	—
`[2734b629525a9dae5bf217cbf0a9651da93d2108,8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`4.17`	affected	generic	—
`[0,4.17)`	unaffected	generic	—
`[5.10.258,5.11.0)`	unaffected	semver	—
`[5.15.209,5.16.0)`	unaffected	semver	—
`[6.1.175,6.2.0)`	unaffected	semver	—
`[6.6.142,6.7.0)`	unaffected	semver	—
`[6.12.92,6.13.0)`	unaffected	semver	—
`[6.18.34,6.19.0)`	unaffected	semver	—
`[7.0.11,7.1.0)`	unaffected	semver	—
`[7.1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Ubuntu USN	USN-8575-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8576-1	Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN	USN-8593-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8575-2	Linux kernel vulnerabilities
Ubuntu USN	USN-8576-2	Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN	USN-8575-3	Linux kernel vulnerabilities
Ubuntu USN	USN-8603-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-8610-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-8618-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8620-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8620-2	Linux kernel (Azure FIPS) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00165.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/1a150947f8480262a46c860f1acb9c6597ca7097
https://git.kernel.org/stable/c/49332e49ad5b20262cc719b03d4123b9362de701
https://git.kernel.org/stable/c/798183376d9d3e278a270ea0e75a5769c8f145d9
https://git.kernel.org/stable/c/8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03
https://git.kernel.org/stable/c/b427e9f6d81c9341cba23ef92f860f99f830d91d
https://git.kernel.org/stable/c/b559a218eece132de0c58d444877b5627cbee524
https://git.kernel.org/stable/c/b6723339736320b2e1784258ad4490cec7aac11a
https://git.kernel.org/stable/c/f383cff9fb382139980bac1bcd3f3f5d59f68435
https://lore.kernel.org/linux-cve-announce/2026071936-CVE-2026-64173-6ece@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-64173
https://www.cve.org/CVERecord?id=CVE-2026-64173

History

Mon, 20 Jul 2026 12:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-1341
References		https://lore.kernel.org/linux-cve-announce/2026071936-CVE-2026-64173-6ece@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-64173 https://www.cve.org/CVERecord?id=CVE-2026-64173
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Sun, 19 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: tracing: Do not call map->ops->elt_free() if elt_alloc() fails In paths where tracing_map_elt_alloc() failed to allocate objects, the map->ops->elt_alloc() call was never successful. In this case, map->ops->elt_free() should not be called.
Title		tracing: Do not call map->ops->elt_free() if elt_alloc() fails
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/1a150947f8480262a46c860f1acb9c6597ca7097 https://git.kernel.org/stable/c/49332e49ad5b20262cc719b03d4123b9362de701 https://git.kernel.org/stable/c/798183376d9d3e278a270ea0e75a5769c8f145d9 https://git.kernel.org/stable/c/8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03 https://git.kernel.org/stable/c/b427e9f6d81c9341cba23ef92f860f99f830d91d https://git.kernel.org/stable/c/b559a218eece132de0c58d444877b5627cbee524 https://git.kernel.org/stable/c/b6723339736320b2e1784258ad4490cec7aac11a https://git.kernel.org/stable/c/f383cff9fb382139980bac1bcd3f3f5d59f68435

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-07-19T15:40:58.251Z

Updated: 2026-07-19T15:40:58.251Z

Reserved: 2026-07-19T07:54:57.039Z

Link: CVE-2026-64173

Vulnrichment

No data.

NVD

No data.

Redhat

Severity : Moderate

Publid Date: 2026-07-19T00:00:00Z

Links: CVE-2026-64173 - Bugzilla

OpenCVE Enrichment

Updated: 2026-07-29T01:00:14Z

Weaknesses

CWE-1341
Multiple Releases of Same Resource or Handle

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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