CVE-2025-37761

Kernel undefined behavior via oversized TLB invalidation

Published May 1, 2025 · Updated Aug 5, 2026

Out-of-bounds shift in the Intel Xe driver in Linux allows local users to trigger undefined behavior during oversized TLB invalidation. xe_gt_tlb_invalidation_range passes an excessive invalidation length to roundup_pow_of_two, causing a 64-bit shift exponent of 64. The path requires Intel Xe shared virtual memory and a range above rounddown_pow_of_two(ULONG_MAX); published evidence shows a UBSAN fault but no confirmed crash or data exposure.

CVSS severity7.1
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds shift in the Intel Xe driver in Linux allows local users to trigger undefined behavior during oversized TLB invalidation. xe_gt_tlb_invalidation_range passes an excessive invalidation length to roundup_pow_of_two, causing a 64-bit shift exponent of 64. The path requires Intel Xe shared virtual memory and a range above rounddown_pow_of_two(ULONG_MAX); published evidence shows a UBSAN fault but no confirmed crash or data exposure.

The record

CVE
CVE-2025-37761
Published
May 1, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=332dd0116c82a75df175a459fa69dda3f23491a7 <28477f701b63922ff88e9fb13f5519c11cd48b86
  2. Affected versionversion=332dd0116c82a75df175a459fa69dda3f23491a7 <7bcfeddb36b77f9fe3b010bb0b282b7618420bba
  3. Affected versionversion=332dd0116c82a75df175a459fa69dda3f23491a7 <e4715858f87b78ce58cfa03bbe140321edbbaf20
  4. Affected versionversion=6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=332dd0116c82a75df175a459fa69dda3f23491a7 <28477f701b63922ff88e9fb13f5519c11cd48b86; version=332dd0116c82a75df175a459fa69dda3f23491a7 <7bcfeddb36b77f9fe3b010bb0b282b7618420bba; version=332dd0116c82a75df175a459fa69dda3f23491a7 <e4715858f87b78ce58cfa03bbe140321edbbaf20; version=6.8

Published CVSS scores

7.1CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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