CVE-2026-80832: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80832DEBIAN-CVE-2026-80832
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80832 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.9% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506OPENSUSE-SU-2026:11773-1

Timeline

  1. 04-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: qce - fix CCM AAD buffer underallocation The AAD buffer allocated in qce_aead_ccm_prepare_buf_assoclen() can be smaller than the length later programmed into the DMA scatterlist. The allocation size is currently calculated as: ALIGN(assoclen, 16) + MAX_CCM_ADATA_HEADER_LEN while the DMA length is set to: ALIGN(assoclen + adata_header_len, 16) Since ALIGN() does not distribute over addition, the allocation can be smaller than the DMA length. For example, when assoclen = 32 and adata_header_len = 2: allocation = ALIGN(32, 16) + 6 = 38 DMA length = ALIGN(32 + 2, 16) = 48 As a result, the QCE hardware can read beyond the allocated buffer while computing the CBC-MAC over the associated data. The extra bytes are folded into the authentication tag, resulting in an incorrect tag and causing CCM self-test failures such as: alg: aead: ccm-aes-qce encryption test failed (wrong result) on test vector 8 Fix the allocation by adding the maximum possible AAD header length before alignment: ALIGN(assoclen + MAX_CCM_ADATA_HEADER_LEN, 16) This guarantees that the allocated buffer is large enough for the fully padded AAD data for all supported header sizes.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.111-1 | < 7.1.13-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 11775b35ce9f27e73d62188d7d38aa0dc0a219aa | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < c9e0f06a023107694698a7930616aeb460d91816 | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < cc56d2b0d77cfeea061e98114992ee687d5eb4dd | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 002f1f99aef7ea631cb687fc17bce64e4963f6aa | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 2f65718b9c1095eef1ae9b374aa0384b1b083f3c | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 46a84efe2dbaddde89073a3c00c694486937c34b | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 4839f4c21f9c577eedef2919ced878a3057c7fc3 | ≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50, < 7f2345f47dd189625f657cd72437179ab4170ee1 | 5.14

3 vendors · 160 products

References

12 links
Show all 12 references