CVE-2026-80522

Local kernel corruption via inflated Tegra decrypt length

Published Aug 26, 2026 · Updated Aug 27, 2026

Out-of-bounds write in affected Linux kernels allows local users to corrupt kernel memory through a Tegra GCM decrypt request. tegra_gcm_do_one_req() subtracts a zero ctx->authsize from the decrypt length and passes the inflated rctx->cryptlen to scatterwalk_map_and_copy(), which writes up to 16 bytes past rctx->dst_sg. Reachability requires Tegra234 hardware with tegra-se loaded and AF_ALG access without ALG_SET_AEAD_AUTHSIZE; the corruption allows a kernel panic or privilege escalation.

CVSS severity7.8
High
EPSS probability0.13%
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 write in affected Linux kernels allows local users to corrupt kernel memory through a Tegra GCM decrypt request. tegra_gcm_do_one_req() subtracts a zero ctx->authsize from the decrypt length and passes the inflated rctx->cryptlen to scatterwalk_map_and_copy(), which writes up to 16 bytes past rctx->dst_sg. Reachability requires Tegra234 hardware with tegra-se loaded and AF_ALG access without ALG_SET_AEAD_AUTHSIZE; the corruption allows a kernel panic or privilege escalation.

The record

CVE
CVE-2026-80522
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <360f2974fcea49c61f6d6f81554741a9eeee7168
  2. Affected versionversion=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <99a18e1d979e0fad3aaf9c65ae6696897c1d9869
  3. Affected versionversion=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <c6237834d9994de209cb90c7a2c461247bce8e90
  4. Affected versionversion=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <cd6991001bf0681ed0bcf21f9cc3d261d749b2bb
  5. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <360f2974fcea49c61f6d6f81554741a9eeee7168; version=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <99a18e1d979e0fad3aaf9c65ae6696897c1d9869; version=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <c6237834d9994de209cb90c7a2c461247bce8e90; version=0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <cd6991001bf0681ed0bcf21f9cc3d261d749b2bb; version=6.10

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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