{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45870","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.081Z","datePublished":"2026-05-27T12:15:50.199Z","dateUpdated":"2026-05-27T12:15:50.199Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-27T12:15:50.199Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/auth_gss/gss_rpc_xdr.c"],"versions":[{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"c81431b1b9fbd21e9a5a9211b5517b7295d18e6a","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"caf7eff432e91a9eba1c79fa545c2f54be15d62b","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"64303b92d94c0c7845a273acd8d84b796d6f1db7","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"df10f23defff22c8d55fe6db74f6e4ce927145bf","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"b4af3806846778799cd4ab0766dc18341e777264","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"d79b9097a6a2b91471b40755f1225364be5d85ff","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"3b56eb90feb8a3709417f5624f3871847d42bcb1","status":"affected","versionType":"git"},{"version":"1d658336b05f8697d6445834f8867f8ad5e4f735","lessThan":"3e6397b056335cc56ef0e9da36c95946a19f5118","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/auth_gss/gss_rpc_xdr.c"],"versions":[{"version":"3.10","status":"affected"},{"version":"0","lessThan":"3.10","status":"unaffected","versionType":"semver"},{"version":"5.10.252","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.202","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.165","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.128","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.75","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.14","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.4","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"3.10","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"7.0"}]}]}],"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"}}}}