{"id":"CVE-2026-80904","state":"PUBLISHED","title":"net/tls: Fail tls_sw_splice_read() after a failed async decrypt","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: Fail tls_sw_splice_read() after a failed async decrypt\n\nWhen an async decrypt fails, tls_decrypt_done() records the error in\nctx->async_wait.err and calls tls_err_abort(), which stores it in\nsk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read\nasync_wait.err once they hold the reader lock and fail the call: a\nrecord that did not authenticate breaks the connection.\n\ntls_sw_splice_read() has no such check, and sk_err does not stand in\nfor one. tls_rx_rec_wait() tests sk_err only inside the loop it\nskips whenever a record is already parsed, and the first reader to\nreach sock_error() clears it, while async_wait.err persists. A\nsplice therefore keeps delivering records on a connection that\nrecvmsg() and read_sock() refuse to read.\n\nRead async_wait.err in tls_sw_splice_read() as the other two readers\ndo.","publishedAt":"2026-09-04T17:19:14.391Z","updatedAt":"2026-09-04T17:19:14.391Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"a808aadff634c7a408b2ab84d5919e9a741fdb5b","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"06c2a53604fa1dc4820063828d7dadb3675b7af8","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"18ae1e95f20867106a28820c208a9cec99dda861","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"82d9269f01ebfd835b6256aa17016a974cbbc647","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"4b177911eb9f799e9841c2f87c75b08cb112757a","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"976df67f463db1fddaf2a32fb04f57ad2891a23d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tls/tls_sw.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.153","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.105","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tls/tls_sw.c"]}],"references":["https://git.kernel.org/stable/c/a808aadff634c7a408b2ab84d5919e9a741fdb5b","https://git.kernel.org/stable/c/06c2a53604fa1dc4820063828d7dadb3675b7af8","https://git.kernel.org/stable/c/18ae1e95f20867106a28820c208a9cec99dda861","https://git.kernel.org/stable/c/82d9269f01ebfd835b6256aa17016a974cbbc647","https://git.kernel.org/stable/c/4b177911eb9f799e9841c2f87c75b08cb112757a","https://git.kernel.org/stable/c/976df67f463db1fddaf2a32fb04f57ad2891a23d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80904.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80904","state":"PUBLISHED","datePublished":"2026-09-04T17:19:14.391Z","dateUpdated":"2026-09-04T17:19:14.391Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.800Z"},"containers":{"cna":{"title":"net/tls: Fail tls_sw_splice_read() after a failed async decrypt","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: Fail tls_sw_splice_read() after a failed async decrypt\n\nWhen an async decrypt fails, tls_decrypt_done() records the error in\nctx->async_wait.err and calls tls_err_abort(), which stores it in\nsk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read\nasync_wait.err once they hold the reader lock and fail the call: a\nrecord that did not authenticate breaks the connection.\n\ntls_sw_splice_read() has no such check, and sk_err does not stand in\nfor one. tls_rx_rec_wait() tests sk_err only inside the loop it\nskips whenever a record is already parsed, and the first reader to\nreach sock_error() clears it, while async_wait.err persists. A\nsplice therefore keeps delivering records on a connection that\nrecvmsg() and read_sock() refuse to read.\n\nRead async_wait.err in tls_sw_splice_read() as the other two readers\ndo."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"a808aadff634c7a408b2ab84d5919e9a741fdb5b","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"06c2a53604fa1dc4820063828d7dadb3675b7af8","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"18ae1e95f20867106a28820c208a9cec99dda861","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"82d9269f01ebfd835b6256aa17016a974cbbc647","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"4b177911eb9f799e9841c2f87c75b08cb112757a","versionType":"git"},{"version":"f314bfee81b1bf8e01168177b2f65f24eb8da63a","status":"affected","lessThan":"976df67f463db1fddaf2a32fb04f57ad2891a23d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tls/tls_sw.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.153","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.105","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.46","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.10","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/tls/tls_sw.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a808aadff634c7a408b2ab84d5919e9a741fdb5b"},{"url":"https://git.kernel.org/stable/c/06c2a53604fa1dc4820063828d7dadb3675b7af8"},{"url":"https://git.kernel.org/stable/c/18ae1e95f20867106a28820c208a9cec99dda861"},{"url":"https://git.kernel.org/stable/c/82d9269f01ebfd835b6256aa17016a974cbbc647"},{"url":"https://git.kernel.org/stable/c/4b177911eb9f799e9841c2f87c75b08cb112757a"},{"url":"https://git.kernel.org/stable/c/976df67f463db1fddaf2a32fb04f57ad2891a23d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-09-04T17:19:14.391Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.18.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"7.1.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}