Unknown

CVE-2026-80832 — crypto: qce - fix CCM AAD buffer underallocation

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.

Published Sep 4, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.18%

ahead of 7% of scored CVEs · Oct 25, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 11775b35ce9f27e73d62188d7d38aa0dc0a219aa≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < c9e0f06a023107694698a7930616aeb460d91816≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < cc56d2b0d77cfeea061e98114992ee687d5eb4dd≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 002f1f99aef7ea631cb687fc17bce64e4963f6aa≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 2f65718b9c1095eef1ae9b374aa0384b1b083f3c≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 46a84efe2dbaddde89073a3c00c694486937c34b≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 4839f4c21f9c577eedef2919ced878a3057c7fc3≥ 9363efb4181c5e0fbf86bdfa759262aa29f0eb50 and < 7f2345f47dd189625f657cd72437179ab4170ee1 and 1 more version 5.14	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 25, 2026 · 10 reading(s) · max 0.18%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 4, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 19, 2026 – Oct 19, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

10 on the record

github.com/advisories/GHSA-5ch2-359f-fp8j
GitHub Security Advisories
git.kernel.org/stable/c/4839f4c21f9c577eedef2919ced878a3057c7fc3
NIST National Vulnerability Database
git.kernel.org/stable/c/7f2345f47dd189625f657cd72437179ab4170ee1
NIST National Vulnerability Database
git.kernel.org/stable/c/2f65718b9c1095eef1ae9b374aa0384b1b083f3c
NIST National Vulnerability Database
git.kernel.org/stable/c/cc56d2b0d77cfeea061e98114992ee687d5eb4dd
NIST National Vulnerability Database
git.kernel.org/stable/c/46a84efe2dbaddde89073a3c00c694486937c34b
NIST National Vulnerability Database
git.kernel.org/stable/c/c9e0f06a023107694698a7930616aeb460d91816
NIST National Vulnerability Database
git.kernel.org/stable/c/002f1f99aef7ea631cb687fc17bce64e4963f6aa
NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-80832
GitHub Security Advisories
git.kernel.org/stable/c/11775b35ce9f27e73d62188d7d38aa0dc0a219aa
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99092 riscv: patch: fix handling of bpf-jit execmem addresses 12h
Unknown CVE-2026-99093 mm: don't schedule deferred kernel page table freeing while booting 12h
Unknown CVE-2026-99095 drm/vc4: drain the hangcheck timer and works on V3D unbind 12h
Unknown CVE-2026-99096 io_uring/register: don't exempt disabled rings from task restrictions 12h
Unknown CVE-2026-99097 tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() 12h
Unknown CVE-2026-99098 dm-integrity: fix buffer overflow in inline mode with large tag size 12h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-80832 is "crypto: qce - fix CCM AAD buffer underallocation", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.18% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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