CVE-2026-53302: Software Security Vulnerability Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-62v4-cxjv-v35x",
  "modified" : "2026-07-06T21:30:25Z",
  "published" : "2026-06-26T21:32:17Z",
  "aliases" : [ "CVE-2026-53302" ],
  "details" : "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]",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53302"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3ba3b02f897b14e34977e1886d95ffe64d907204"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec226d3e58bb9f0e26a77346085b6b4d594d53d8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fc9310d79fdb117b369a01eb00f4fd5fb4849d4e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-26T20:17:23Z"
  }
}