{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-53302", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.397Z", "datePublished": "2026-06-26T19:40:58.636Z", "dateUpdated": "2026-06-26T19:40:58.636Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-26T19:40:58.636Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: eip93 - fix hmac setkey algo selection\n\neip93_hmac_setkey() allocates a temporary ahash transform for\ncomputing HMAC ipad/opad key material. The allocation uses the\ndriver-specific cra_driver_name (e.g. \"sha256-eip93\") but passes\nCRYPTO_ALG_ASYNC as the mask, which excludes async algorithms.\n\nSince the EIP93 hash algorithms are the only ones registered\nunder those driver names and they are inherently async, the\nlookup is self-contradictory and always fails with -ENOENT.\n\nWhen called from the AEAD setkey path, this failure leaves the\nSA record partially initialized with zeroed digest fields. A\nsubsequent crypto operation then dereferences a NULL pointer in\nthe request context, resulting in a kernel panic:\n\n```\n pc : eip93_aead_handle_result+0xc8c/0x1240 [crypto_hw_eip93]\n lr : eip93_aead_handle_result+0xbec/0x1240 [crypto_hw_eip93]\n sp : ffffffc082feb820\n x29: ffffffc082feb820 x28: ffffff8011043980 x27: 0000000000000000\n x26: 0000000000000000 x25: ffffffc078da0bc8 x24: 0000000091043980\n x23: ffffff8004d59e50 x22: ffffff8004d59410 x21: ffffff8004d593c0\n x20: ffffff8004d593c0 x19: ffffff8004d4f300 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000007fda7aa498\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: fffffffff8127a80 x9 : 0000000000000000\n x8 : ffffff8004d4f380 x7 : 0000000000000000 x6 : 000000000000003f\n x5 : 0000000000000040 x4 : 0000000000000008 x3 : 0000000000000009\n x2 : 0000000000000008 x1 : 0000000028000003 x0 : ffffff8004d388c0\n Code: 910142b6 f94012e0 f9002aa0 f90006d3 (f9400740)\n```\n\nThe reported symbol eip93_aead_handle_result+0xc8c is a\nresolution artifact from static functions being merged under\nthe nearest exported symbol. Decoding the faulting sequence:\n\n```\n 910142b6 ADD X22, X21, #0x50\n f94012e0 LDR X0, [X23, #0x20]\n f9002aa0 STR X0, [X21, #0x50]\n f90006d3 STR X19, [X22, #0x8]\n f9400740 LDR X0, [X26, #0x8]\n```\n\nThe faulting LDR at [X26, #0x8] is loading ctx->flags\n(offset 8 in eip93_hash_ctx), where ctx has been resolved\nto NULL from a partially initialized or unreachable\ntransform context following the failed setkey.\n\nFix this by dropping the CRYPTO_ALG_ASYNC mask from the\ncrypto_alloc_ahash() call. The code already handles async\ncompletion correctly via crypto_wait_req(), so there is no\nrequirement to restrict the lookup to synchronous algorithms.\n\nNote that hashing a single 64-byte block through the hardware\nis likely slower than doing it in software due to the DMA\nround-trip overhead, but offloading it may still spare CPU\ncycles on the slower embedded cores where this IP is found.\n\n[Detailed investigation report of this bug]" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/inside-secure/eip93/eip93-common.c" ], "versions": [ { "version": "9739f5f93b7806a684713ba42e6ed2d1df7c8100", "lessThan": "fc9310d79fdb117b369a01eb00f4fd5fb4849d4e", "status": "affected", "versionType": "git" }, { "version": "9739f5f93b7806a684713ba42e6ed2d1df7c8100", "lessThan": "ec226d3e58bb9f0e26a77346085b6b4d594d53d8", "status": "affected", "versionType": "git" }, { "version": "9739f5f93b7806a684713ba42e6ed2d1df7c8100", "lessThan": "3ba3b02f897b14e34977e1886d95ffe64d907204", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/inside-secure/eip93/eip93-common.c" ], "versions": [ { "version": "6.15", "status": "affected" }, { "version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.0.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/fc9310d79fdb117b369a01eb00f4fd5fb4849d4e" }, { "url": "https://git.kernel.org/stable/c/ec226d3e58bb9f0e26a77346085b6b4d594d53d8" }, { "url": "https://git.kernel.org/stable/c/3ba3b02f897b14e34977e1886d95ffe64d907204" } ], "title": "crypto: eip93 - fix hmac setkey algo selection", "x_generator": { "engine": "bippy-1.2.0" } } } }