CVE-2026-64000 (GCVE-0-2026-64000)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-07-20 13:42
VLAI
Title
net: hsr: fix potential OOB access in supervision frame handling
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < 09a37dca090c55ffb1a33f52d8667f1c2367ef48 (git)
Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < a4b64f3e9c7b8259f7dd251a0313420ba7c01852 (git)
Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < 71c986c0ba45b7dc574fae27c83e7b6671556f37 (git)
Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 (git)
Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < 78607a6854a22a2502f68092202e75a39af4865d (git)
Affected: eafaa88b3eb7f28aecb222281655473431d3ef2e , < f229426072fc865654a60978bb7fda790a051ff3 (git)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.93 , ≤ 6.12.* (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-07-19T07:54:57.026Z",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.