---
id: CVE-2026-80522
title: 'crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req()

  Perform rctx->cryptlen calculation in tegra_gcm_do_one_req() the same way
  it is done in tegra_…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <
    cd6991001bf0681ed0bcf21f9cc3d261d749b2bb
  - >-
    Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <
    99a18e1d979e0fad3aaf9c65ae6696897c1d9869
  - >-
    Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <
    c6237834d9994de209cb90c7a2c461247bce8e90
  - >-
    Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 <
    360f2974fcea49c61f6d6f81554741a9eeee7168
  - Linux 6.10
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:16:31.536900Z'
published: '2026-08-26'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:26:24.520Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80522'
references:
  - url: 'https://git.kernel.org/stable/c/cd6991001bf0681ed0bcf21f9cc3d261d749b2bb'
  - url: 'https://git.kernel.org/stable/c/99a18e1d979e0fad3aaf9c65ae6696897c1d9869'
  - url: 'https://git.kernel.org/stable/c/c6237834d9994de209cb90c7a2c461247bce8e90'
  - url: 'https://git.kernel.org/stable/c/360f2974fcea49c61f6d6f81554741a9eeee7168'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.02221
ingestedAt: '2026-10-16T19:46:24.320Z'
---

## Overview

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

crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req()

Perform rctx->cryptlen calculation in tegra_gcm_do_one_req() the same way
it is done in tegra_ccm_crypt_init(). The current formulae may lead to a
crash if a caller does not call tegra_gcm_setauthsize() and so ctx->authsize
remains zero. Then a decrypt operation with incorrect rctx->cryptlen will
lead to a write beyound rctx->dst_sg buffer.

As a follow-up cleanup delete struct tegra_aead_ctx->authsize field since
it appears to be completely unused. Also simplify tegra_ccm_setauthsize()
and tegra_gcm_setauthsize() functions respectively.

## Affected

- `Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 < cd6991001bf0681ed0bcf21f9cc3d261d749b2bb`
- `Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 < 99a18e1d979e0fad3aaf9c65ae6696897c1d9869`
- `Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 < c6237834d9994de209cb90c7a2c461247bce8e90`
- `Linux >= 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0 < 360f2974fcea49c61f6d6f81554741a9eeee7168`
- `Linux 6.10`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.