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

net: hsr: fix potential OOB access in supervision frame handling

Ensure the entire TLV header is linearized before access by adding
sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this,
a truncated frame could cause an out-of-bounds access.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

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 0.00172.

Key SSVC decision points have not yet been added.

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 Linux unaffected
Version Status Constraints
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < 09a37dca090c55ffb1a33f52d8667f1c2367ef48
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < a4b64f3e9c7b8259f7dd251a0313420ba7c01852
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < 71c986c0ba45b7dc574fae27c83e7b6671556f37
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < 78607a6854a22a2502f68092202e75a39af4865d
eafaa88b3eb7f28aecb222281655473431d3ef2e affected < f229426072fc865654a60978bb7fda790a051ff3
Linux Linux affected
Version Status Constraints
5.16 affected —
0 unaffected < 5.16
6.1.176 unaffected ≤ 6.1.*
6.6.143 unaffected ≤ 6.6.*
6.12.93 unaffected ≤ 6.12.*
6.18.35 unaffected ≤ 6.18.*
7.0.12 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48 cve-icon
https://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37 cve-icon
https://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d cve-icon
https://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852 cve-icon
https://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3 cve-icon
https://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 cve-icon
History

Mon, 20 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Sun, 19 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.
Title net: hsr: fix potential OOB access in supervision frame handling
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-20T13:42:12.905Z

Reserved: 2026-07-19T07:54:57.026Z

Link: CVE-2026-64000

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.