{"api_version":"1","generated_at":"2026-06-03T09:08:55+00:00","cve":"CVE-2026-45870","urls":{"html":"https://cve.report/CVE-2026-45870","api":"https://cve.report/api/cve/CVE-2026-45870.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45870","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45870"},"summary":{"title":"SUNRPC: auth_gss: fix memory leaks in XDR decoding error paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: auth_gss: fix memory leaks in XDR decoding error paths\n\nThe gssx_dec_ctx(), gssx_dec_status(), and gssx_dec_name()\nfunctions allocate memory via gssx_dec_buffer(), which calls\nkmemdup(). When a subsequent decode operation fails, these\nfunctions return immediately without freeing previously\nallocated buffers, causing memory leaks.\n\nThe leak in gssx_dec_ctx() is particularly relevant because\nthe caller (gssp_accept_sec_context_upcall) initializes several\nbuffer length fields to non-zero values, resulting in memory\nallocation:\n\n    struct gssx_ctx rctxh = {\n        .exported_context_token.len = GSSX_max_output_handle_sz,\n        .mech.len = GSS_OID_MAX_LEN,\n        .src_name.display_name.len = GSSX_max_princ_sz,\n        .targ_name.display_name.len = GSSX_max_princ_sz\n    };\n\nIf, for example, gssx_dec_name() succeeds for src_name but\nfails for targ_name, the memory allocated for\nexported_context_token, mech, and src_name.display_name\nremains unreferenced and cannot be reclaimed.\n\nAdd error handling with goto-based cleanup to free any\npreviously allocated buffers before returning an error.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:00","updated_at":"2026-05-27 14:48:31"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/64303b92d94c0c7845a273acd8d84b796d6f1db7","name":"https://git.kernel.org/stable/c/64303b92d94c0c7845a273acd8d84b796d6f1db7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c81431b1b9fbd21e9a5a9211b5517b7295d18e6a","name":"https://git.kernel.org/stable/c/c81431b1b9fbd21e9a5a9211b5517b7295d18e6a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3b56eb90feb8a3709417f5624f3871847d42bcb1","name":"https://git.kernel.org/stable/c/3b56eb90feb8a3709417f5624f3871847d42bcb1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3e6397b056335cc56ef0e9da36c95946a19f5118","name":"https://git.kernel.org/stable/c/3e6397b056335cc56ef0e9da36c95946a19f5118","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/caf7eff432e91a9eba1c79fa545c2f54be15d62b","name":"https://git.kernel.org/stable/c/caf7eff432e91a9eba1c79fa545c2f54be15d62b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b4af3806846778799cd4ab0766dc18341e777264","name":"https://git.kernel.org/stable/c/b4af3806846778799cd4ab0766dc18341e777264","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d79b9097a6a2b91471b40755f1225364be5d85ff","name":"https://git.kernel.org/stable/c/d79b9097a6a2b91471b40755f1225364be5d85ff","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df10f23defff22c8d55fe6db74f6e4ce927145bf","name":"https://git.kernel.org/stable/c/df10f23defff22c8d55fe6db74f6e4ce927145bf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45870","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45870","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 c81431b1b9fbd21e9a5a9211b5517b7295d18e6a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 caf7eff432e91a9eba1c79fa545c2f54be15d62b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 64303b92d94c0c7845a273acd8d84b796d6f1db7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 df10f23defff22c8d55fe6db74f6e4ce927145bf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 b4af3806846778799cd4ab0766dc18341e777264 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 d79b9097a6a2b91471b40755f1225364be5d85ff git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 3b56eb90feb8a3709417f5624f3871847d42bcb1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d658336b05f8697d6445834f8867f8ad5e4f735 3e6397b056335cc56ef0e9da36c95946a19f5118 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.252 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.202 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.14 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.4 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"45870","cve":"CVE-2026-45870","epss":"0.000240000","percentile":"0.073320000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sunrpc/auth_gss/gss_rpc_xdr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c81431b1b9fbd21e9a5a9211b5517b7295d18e6a","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"caf7eff432e91a9eba1c79fa545c2f54be15d62b","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"64303b92d94c0c7845a273acd8d84b796d6f1db7","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"df10f23defff22c8d55fe6db74f6e4ce927145bf","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"b4af3806846778799cd4ab0766dc18341e777264","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"d79b9097a6a2b91471b40755f1225364be5d85ff","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"3b56eb90feb8a3709417f5624f3871847d42bcb1","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"},{"lessThan":"3e6397b056335cc56ef0e9da36c95946a19f5118","status":"affected","version":"1d658336b05f8697d6445834f8867f8ad5e4f735","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/sunrpc/auth_gss/gss_rpc_xdr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.10"},{"lessThan":"3.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.252","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: auth_gss: fix memory leaks in XDR decoding error paths\n\nThe gssx_dec_ctx(), gssx_dec_status(), and gssx_dec_name()\nfunctions allocate memory via gssx_dec_buffer(), which calls\nkmemdup(). When a subsequent decode operation fails, these\nfunctions return immediately without freeing previously\nallocated buffers, causing memory leaks.\n\nThe leak in gssx_dec_ctx() is particularly relevant because\nthe caller (gssp_accept_sec_context_upcall) initializes several\nbuffer length fields to non-zero values, resulting in memory\nallocation:\n\n    struct gssx_ctx rctxh = {\n        .exported_context_token.len = GSSX_max_output_handle_sz,\n        .mech.len = GSS_OID_MAX_LEN,\n        .src_name.display_name.len = GSSX_max_princ_sz,\n        .targ_name.display_name.len = GSSX_max_princ_sz\n    };\n\nIf, for example, gssx_dec_name() succeeds for src_name but\nfails for targ_name, the memory allocated for\nexported_context_token, mech, and src_name.display_name\nremains unreferenced and cannot be reclaimed.\n\nAdd error handling with goto-based cleanup to free any\npreviously allocated buffers before returning an error."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:15:50.199Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c81431b1b9fbd21e9a5a9211b5517b7295d18e6a"},{"url":"https://git.kernel.org/stable/c/caf7eff432e91a9eba1c79fa545c2f54be15d62b"},{"url":"https://git.kernel.org/stable/c/64303b92d94c0c7845a273acd8d84b796d6f1db7"},{"url":"https://git.kernel.org/stable/c/df10f23defff22c8d55fe6db74f6e4ce927145bf"},{"url":"https://git.kernel.org/stable/c/b4af3806846778799cd4ab0766dc18341e777264"},{"url":"https://git.kernel.org/stable/c/d79b9097a6a2b91471b40755f1225364be5d85ff"},{"url":"https://git.kernel.org/stable/c/3b56eb90feb8a3709417f5624f3871847d42bcb1"},{"url":"https://git.kernel.org/stable/c/3e6397b056335cc56ef0e9da36c95946a19f5118"}],"title":"SUNRPC: auth_gss: fix memory leaks in XDR decoding error paths","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45870","datePublished":"2026-05-27T12:15:50.199Z","dateReserved":"2026-05-13T15:03:33.081Z","dateUpdated":"2026-05-27T12:15:50.199Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:00","lastModifiedDate":"2026-05-27 14:48:31","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45870","Ordinal":"1","Title":"SUNRPC: auth_gss: fix memory leaks in XDR decoding error paths","CVE":"CVE-2026-45870","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45870","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: auth_gss: fix memory leaks in XDR decoding error paths\n\nThe gssx_dec_ctx(), gssx_dec_status(), and gssx_dec_name()\nfunctions allocate memory via gssx_dec_buffer(), which calls\nkmemdup(). When a subsequent decode operation fails, these\nfunctions return immediately without freeing previously\nallocated buffers, causing memory leaks.\n\nThe leak in gssx_dec_ctx() is particularly relevant because\nthe caller (gssp_accept_sec_context_upcall) initializes several\nbuffer length fields to non-zero values, resulting in memory\nallocation:\n\n    struct gssx_ctx rctxh = {\n        .exported_context_token.len = GSSX_max_output_handle_sz,\n        .mech.len = GSS_OID_MAX_LEN,\n        .src_name.display_name.len = GSSX_max_princ_sz,\n        .targ_name.display_name.len = GSSX_max_princ_sz\n    };\n\nIf, for example, gssx_dec_name() succeeds for src_name but\nfails for targ_name, the memory allocated for\nexported_context_token, mech, and src_name.display_name\nremains unreferenced and cannot be reclaimed.\n\nAdd error handling with goto-based cleanup to free any\npreviously allocated buffers before returning an error.","Type":"Description","Title":"SUNRPC: auth_gss: fix memory leaks in XDR decoding error paths"}]}}}