CVE-2026-53354 - Vulnerability Details

- arm64: errata: Mitigate TLBI errata on various Arm CPUs

Description

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

arm64: errata: Mitigate TLBI errata on various Arm CPUs

A number of CPUs developed by Arm suffer from errata whereby a broadcast
TLBI;DSB sequence may complete before the global observation of writes
which are translated by an affected TLB entry.

These errata ONLY affect the completion of memory accesses which have
been translated by an invalidated TLB entry, and these errata DO NOT
affect the actual invalidation of TLB entries. TLB entries are removed
correctly.

This issue has been assigned CVE ID CVE-2025-10263.

To mitigate this issue, Arm recommends that software follows any
affected TLBI;DSB sequence with an additional TLBI;DSB, which will
ensure that all memory write effects affected by the first TLBI have
been globally observed. The additional TLBI can use any operation that
is broadcast to affected CPUs, and the additional DSB can use any option
that is sufficient to complete the additional TLBI.

The ARM64_WORKAROUND_REPEAT_TLBI workaround is sufficient to mitigate
the issue. Enable this workaround for affected CPUs, and update the
silicon errata documentation accordingly.

Note that due to the manner in which Arm develops IP and tracks errata,
some CPUs share a common erratum number.

Published: 2026-07-01

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

Hardware errata race condition where the broadcast TLBI;DSB sequence may complete before the memory writes performed through an invalidated TLB entry are globally observed. The flaw does not invalidate the TLB entries themselves, but it can leave kernel memory in an inconsistent state after a write, potentially resulting in crashes or data corruption. The weakness is an error‑handling defect (CWE‑1037) and does not directly grant code execution.

Affected Systems

All Linux kernels compiled for the specific CPUs are identified by the errata tables referenced in the advisory.

Risk and Exploitability

The CVSS score of 7.0 and EPSS score of less than 1% show a very low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog and no public exploit has been reported. Based on the description, it is inferred that a privileged attacker with kernel execution rights would need to orchestrate the race condition in order to abuse the flaw, but the exact attack surface is not clearly documented.

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
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 925058203229403008d77a52b1e63e2ae5f4a3cf
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 8364384ae82fbffdf8968abaac3455ed854da18d
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 7c3ad9365079e716b57d2363d3081ee7680cc18e
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< e717a4d08779f1a28d6e0275e75040b12c33c753
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 4e7c80742e6dada9f8b9ad63f3a49c03af07ecb8
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< d4fd4282204044fdedd1e42abbe70a9206f74ec0
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 1b47b1e1d8675fdf5f6e11e7fa19c704d8c6f5cd
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< 1268c64e2bcb6e968152990e87bd10c440fcc9c0
`58d0ba578bc3b7c044d4ef570307bcb03862cb66`	affected	< cfd391e74134db664feb499d43af286380b10ba8

Linux

affected

Version	Status	Constraints
`3.7`	affected	—
`0`	unaffected	< 3.7
`5.10.259`	unaffected	≤ 5.10.*
`5.15.210`	unaffected	≤ 5.15.*
`6.1.176`	unaffected	≤ 6.1.*
`6.6.143`	unaffected	≤ 6.6.*
`6.12.94`	unaffected	≤ 6.12.*
`6.18.36`	unaffected	≤ 6.18.*
`7.0.13`	unaffected	≤ 7.0.*
`7.1.1`	unaffected	≤ 7.1.*
`7.2-rc1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,925058203229403008d77a52b1e63e2ae5f4a3cf)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8364384ae82fbffdf8968abaac3455ed854da18d)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7c3ad9365079e716b57d2363d3081ee7680cc18e)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,e717a4d08779f1a28d6e0275e75040b12c33c753)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4e7c80742e6dada9f8b9ad63f3a49c03af07ecb8)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,d4fd4282204044fdedd1e42abbe70a9206f74ec0)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,1b47b1e1d8675fdf5f6e11e7fa19c704d8c6f5cd)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,1268c64e2bcb6e968152990e87bd10c440fcc9c0)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,cfd391e74134db664feb499d43af286380b10ba8)`	affected	code_commit	—
`[0,5.10.259)`	affected	semver	—
`[0,5.15.210)`	affected	semver	—
`[0,6.1.176)`	affected	semver	—
`[0,6.6.143)`	affected	semver	—
`[0,6.12.94)`	affected	semver	—
`[0,6.18.36)`	affected	semver	—
`[0,7.0.13)`	affected	semver	—
`[0,7.1.1)`	affected	semver	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[5.10.259,5.11.0)`	unaffected	semver	—
`[5.15.210,5.16.0)`	unaffected	semver	—
`[6.1.176,6.2.0)`	unaffected	semver	—
`[6.6.143,6.7.0)`	unaffected	semver	—
`[6.12.94,6.13.0)`	unaffected	semver	—
`[6.18.36,6.19.0)`	unaffected	semver	—
`[7.0.13,7.1.0)`	unaffected	semver	—
`[7.1.1,7.2.0)`	unaffected	semver	—
`[7.2-rc1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Enable CONFIG_ARM64_WORKAROUND_REPEAT_TLBI in the kernel configuration for all affected arm64 CPUs.
Rebuild the kernel, deploy the patched image to all impacted hosts, and reboot to use the updated kernel.
Document the applied mitigation and update the silicon errata tracking to reflect the workaround.

Generated by OpenCVE AI on July 21, 2026 at 14:34 UTC.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-4664-1	linux security update
Debian DLA	DLA-4665-1	linux security update
Debian DLA	DLA-4671-1	linux-6.1 security update

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

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 0.00125.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/1268c64e2bcb6e968152990e87bd10c440fcc9c0
https://git.kernel.org/stable/c/1b47b1e1d8675fdf5f6e11e7fa19c704d8c6f5cd
https://git.kernel.org/stable/c/4e7c80742e6dada9f8b9ad63f3a49c03af07ecb8
https://git.kernel.org/stable/c/7c3ad9365079e716b57d2363d3081ee7680cc18e
https://git.kernel.org/stable/c/8364384ae82fbffdf8968abaac3455ed854da18d
https://git.kernel.org/stable/c/925058203229403008d77a52b1e63e2ae5f4a3cf
https://git.kernel.org/stable/c/cfd391e74134db664feb499d43af286380b10ba8
https://git.kernel.org/stable/c/d4fd4282204044fdedd1e42abbe70a9206f74ec0
https://git.kernel.org/stable/c/e717a4d08779f1a28d6e0275e75040b12c33c753
https://lore.kernel.org/linux-cve-announce/2026070147-CVE-2026-53354-f606@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-53354
https://www.cve.org/CVERecord?id=CVE-2026-53354

History

Sat, 18 Jul 2026 08:00:00 +0000

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}`	cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}`

Thu, 02 Jul 2026 01:30:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-752 CWE-754

Thu, 02 Jul 2026 00:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-1037
References		https://lore.kernel.org/linux-cve-announce/2026070147-CVE-2026-53354-f606@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-53354 https://www.cve.org/CVERecord?id=CVE-2026-53354
Metrics	threat_severity `None`	cvssV3_1 `{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}` threat_severity `Moderate`

Wed, 01 Jul 2026 15:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-752 CWE-754

Wed, 01 Jul 2026 13:45:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: arm64: errata: Mitigate TLBI errata on various Arm CPUs A number of CPUs developed by Arm suffer from errata whereby a broadcast TLBI;DSB sequence may complete before the global observation of writes which are translated by an affected TLB entry. These errata ONLY affect the completion of memory accesses which have been translated by an invalidated TLB entry, and these errata DO NOT affect the actual invalidation of TLB entries. TLB entries are removed correctly. This issue has been assigned CVE ID CVE-2025-10263. To mitigate this issue, Arm recommends that software follows any affected TLBI;DSB sequence with an additional TLBI;DSB, which will ensure that all memory write effects affected by the first TLBI have been globally observed. The additional TLBI can use any operation that is broadcast to affected CPUs, and the additional DSB can use any option that is sufficient to complete the additional TLBI. The ARM64_WORKAROUND_REPEAT_TLBI workaround is sufficient to mitigate the issue. Enable this workaround for affected CPUs, and update the silicon errata documentation accordingly. Note that due to the manner in which Arm develops IP and tracks errata, some CPUs share a common erratum number.
Title		arm64: errata: Mitigate TLBI errata on various Arm CPUs
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/1268c64e2bcb6e968152990e87bd10c440fcc9c0 https://git.kernel.org/stable/c/1b47b1e1d8675fdf5f6e11e7fa19c704d8c6f5cd https://git.kernel.org/stable/c/4e7c80742e6dada9f8b9ad63f3a49c03af07ecb8 https://git.kernel.org/stable/c/7c3ad9365079e716b57d2363d3081ee7680cc18e https://git.kernel.org/stable/c/8364384ae82fbffdf8968abaac3455ed854da18d https://git.kernel.org/stable/c/925058203229403008d77a52b1e63e2ae5f4a3cf https://git.kernel.org/stable/c/cfd391e74134db664feb499d43af286380b10ba8 https://git.kernel.org/stable/c/d4fd4282204044fdedd1e42abbe70a9206f74ec0 https://git.kernel.org/stable/c/e717a4d08779f1a28d6e0275e75040b12c33c753

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-07-01T13:32:30.246Z

Updated: 2026-07-18T07:33:22.248Z

Reserved: 2026-06-09T07:44:35.400Z

Link: CVE-2026-53354

Vulnrichment

No data.

NVD

No data.

Redhat

Severity : Moderate

Publid Date: 2026-07-01T00:00:00Z

Links: CVE-2026-53354 - Bugzilla

OpenCVE Enrichment

Updated: 2026-07-21T14:45:02Z

Weaknesses

CWE-1037
Processor Optimization Removal or Modification of Security-critical Code

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Subscriptions

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