{"id":"CVE-2026-80832","state":"PUBLISHED","title":"crypto: qce - fix CCM AAD buffer underallocation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qce - fix CCM AAD buffer underallocation\n\nThe AAD buffer allocated in qce_aead_ccm_prepare_buf_assoclen()\ncan be smaller than the length later programmed into the DMA\nscatterlist.\n\nThe allocation size is currently calculated as:\n\n  ALIGN(assoclen, 16) + MAX_CCM_ADATA_HEADER_LEN\n\nwhile the DMA length is set to:\n\n  ALIGN(assoclen + adata_header_len, 16)\n\nSince ALIGN() does not distribute over addition, the allocation\ncan be smaller than the DMA length. For example, when\nassoclen = 32 and adata_header_len = 2:\n\n  allocation = ALIGN(32, 16) + 6 = 38\n  DMA length = ALIGN(32 + 2, 16) = 48\n\nAs a result, the QCE hardware can read beyond the allocated\nbuffer while computing the CBC-MAC over the associated data.\nThe extra bytes are folded into the authentication tag,\nresulting in an incorrect tag and causing CCM self-test\nfailures such as:\n\n  alg: aead: ccm-aes-qce encryption test failed (wrong result)\n  on test vector 8\n\nFix the allocation by adding the maximum possible AAD header\nlength before alignment:\n\n  ALIGN(assoclen + MAX_CCM_ADATA_HEADER_LEN, 16)\n\nThis guarantees that the allocated buffer is large enough\nfor the fully padded AAD data for all supported header sizes.","publishedAt":"2026-09-04T15:54:40.017Z","updatedAt":"2026-10-19T08:44:24.636Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"11775b35ce9f27e73d62188d7d38aa0dc0a219aa","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"c9e0f06a023107694698a7930616aeb460d91816","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"cc56d2b0d77cfeea061e98114992ee687d5eb4dd","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"002f1f99aef7ea631cb687fc17bce64e4963f6aa","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"2f65718b9c1095eef1ae9b374aa0384b1b083f3c","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"46a84efe2dbaddde89073a3c00c694486937c34b","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"4839f4c21f9c577eedef2919ced878a3057c7fc3","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"7f2345f47dd189625f657cd72437179ab4170ee1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qce/aead.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.220","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.187","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.156","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.108","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.49","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.13","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.3","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qce/aead.c"]}],"references":["https://git.kernel.org/stable/c/11775b35ce9f27e73d62188d7d38aa0dc0a219aa","https://git.kernel.org/stable/c/c9e0f06a023107694698a7930616aeb460d91816","https://git.kernel.org/stable/c/cc56d2b0d77cfeea061e98114992ee687d5eb4dd","https://git.kernel.org/stable/c/002f1f99aef7ea631cb687fc17bce64e4963f6aa","https://git.kernel.org/stable/c/2f65718b9c1095eef1ae9b374aa0384b1b083f3c","https://git.kernel.org/stable/c/46a84efe2dbaddde89073a3c00c694486937c34b","https://git.kernel.org/stable/c/4839f4c21f9c577eedef2919ced878a3057c7fc3","https://git.kernel.org/stable/c/7f2345f47dd189625f657cd72437179ab4170ee1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80832.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80832","state":"PUBLISHED","datePublished":"2026-09-04T15:54:40.017Z","dateUpdated":"2026-10-19T08:44:24.636Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.796Z"},"containers":{"cna":{"title":"crypto: qce - fix CCM AAD buffer underallocation","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qce - fix CCM AAD buffer underallocation\n\nThe AAD buffer allocated in qce_aead_ccm_prepare_buf_assoclen()\ncan be smaller than the length later programmed into the DMA\nscatterlist.\n\nThe allocation size is currently calculated as:\n\n  ALIGN(assoclen, 16) + MAX_CCM_ADATA_HEADER_LEN\n\nwhile the DMA length is set to:\n\n  ALIGN(assoclen + adata_header_len, 16)\n\nSince ALIGN() does not distribute over addition, the allocation\ncan be smaller than the DMA length. For example, when\nassoclen = 32 and adata_header_len = 2:\n\n  allocation = ALIGN(32, 16) + 6 = 38\n  DMA length = ALIGN(32 + 2, 16) = 48\n\nAs a result, the QCE hardware can read beyond the allocated\nbuffer while computing the CBC-MAC over the associated data.\nThe extra bytes are folded into the authentication tag,\nresulting in an incorrect tag and causing CCM self-test\nfailures such as:\n\n  alg: aead: ccm-aes-qce encryption test failed (wrong result)\n  on test vector 8\n\nFix the allocation by adding the maximum possible AAD header\nlength before alignment:\n\n  ALIGN(assoclen + MAX_CCM_ADATA_HEADER_LEN, 16)\n\nThis guarantees that the allocated buffer is large enough\nfor the fully padded AAD data for all supported header sizes."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"11775b35ce9f27e73d62188d7d38aa0dc0a219aa","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"c9e0f06a023107694698a7930616aeb460d91816","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"cc56d2b0d77cfeea061e98114992ee687d5eb4dd","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"002f1f99aef7ea631cb687fc17bce64e4963f6aa","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"2f65718b9c1095eef1ae9b374aa0384b1b083f3c","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"46a84efe2dbaddde89073a3c00c694486937c34b","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"4839f4c21f9c577eedef2919ced878a3057c7fc3","versionType":"git"},{"version":"9363efb4181c5e0fbf86bdfa759262aa29f0eb50","status":"affected","lessThan":"7f2345f47dd189625f657cd72437179ab4170ee1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qce/aead.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.220","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.187","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.156","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.108","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.49","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.13","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.3","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qce/aead.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/11775b35ce9f27e73d62188d7d38aa0dc0a219aa"},{"url":"https://git.kernel.org/stable/c/c9e0f06a023107694698a7930616aeb460d91816"},{"url":"https://git.kernel.org/stable/c/cc56d2b0d77cfeea061e98114992ee687d5eb4dd"},{"url":"https://git.kernel.org/stable/c/002f1f99aef7ea631cb687fc17bce64e4963f6aa"},{"url":"https://git.kernel.org/stable/c/2f65718b9c1095eef1ae9b374aa0384b1b083f3c"},{"url":"https://git.kernel.org/stable/c/46a84efe2dbaddde89073a3c00c694486937c34b"},{"url":"https://git.kernel.org/stable/c/4839f4c21f9c577eedef2919ced878a3057c7fc3"},{"url":"https://git.kernel.org/stable/c/7f2345f47dd189625f657cd72437179ab4170ee1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:44:24.636Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.220"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1.187"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.6.156"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.12.108"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.1.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}