{"cve":{"cve_id":"CVE-2026-53302","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"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]","published_at":"2026-06-26T19:40:58.636000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/fc9310d79fdb117b369a01eb00f4fd5fb4849d4e","https://git.kernel.org/stable/c/ec226d3e58bb9f0e26a77346085b6b4d594d53d8","https://git.kernel.org/stable/c/3ba3b02f897b14e34977e1886d95ffe64d907204"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:52.348775Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"9739f5f93b7806a684713ba42e6ed2d1df7c8100","version_start_inclusive":true,"version_end":"fc9310d79fdb117b369a01eb00f4fd5fb4849d4e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:9739f5f93b7806a684713ba42e6ed2d1df7c8100:fc9310d79fdb117b369a01eb00f4fd5fb4849d4e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"9739f5f93b7806a684713ba42e6ed2d1df7c8100","version_start_inclusive":true,"version_end":"ec226d3e58bb9f0e26a77346085b6b4d594d53d8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:9739f5f93b7806a684713ba42e6ed2d1df7c8100:ec226d3e58bb9f0e26a77346085b6b4d594d53d8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"9739f5f93b7806a684713ba42e6ed2d1df7c8100","version_start_inclusive":true,"version_end":"3ba3b02f897b14e34977e1886d95ffe64d907204","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:9739f5f93b7806a684713ba42e6ed2d1df7c8100:3ba3b02f897b14e34977e1886d95ffe64d907204"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.15","version_start_inclusive":true,"version_end":"6.15","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.15:6.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/fc9310d79fdb117b369a01eb00f4fd5fb4849d4e","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ec226d3e58bb9f0e26a77346085b6b4d594d53d8","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/3ba3b02f897b14e34977e1886d95ffe64d907204","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-26T19:40:58.636000Z","label":"CVE published","source":null}]}