CVE-2026-80904 (GCVE-0-2026-80904)
Vulnerability from cvelistv5 – Published: 2026-09-04 17:19 – Updated: 2026-09-04 17:19
VLAI
EPSS
VEX
Title
net/tls: Fail tls_sw_splice_read() after a failed async decrypt
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/tls: Fail tls_sw_splice_read() after a failed async decrypt
When an async decrypt fails, tls_decrypt_done() records the error in
ctx->async_wait.err and calls tls_err_abort(), which stores it in
sk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read
async_wait.err once they hold the reader lock and fail the call: a
record that did not authenticate breaks the connection.
tls_sw_splice_read() has no such check, and sk_err does not stand in
for one. tls_rx_rec_wait() tests sk_err only inside the loop it
skips whenever a record is already parsed, and the first reader to
reach sock_error() clears it, while async_wait.err persists. A
splice therefore keeps delivering records on a connection that
recvmsg() and read_sock() refuse to read.
Read async_wait.err in tls_sw_splice_read() as the other two readers
do.
Severity
No CVSS data available.
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f314bfee81b1bf8e01168177b2f65f24eb8da63a , < a808aadff634c7a408b2ab84d5919e9a741fdb5b
(git)
Affected: f314bfee81b1bf8e01168177b2f65f24eb8da63a , < 06c2a53604fa1dc4820063828d7dadb3675b7af8 (git) Affected: f314bfee81b1bf8e01168177b2f65f24eb8da63a , < 18ae1e95f20867106a28820c208a9cec99dda861 (git) Affected: f314bfee81b1bf8e01168177b2f65f24eb8da63a , < 82d9269f01ebfd835b6256aa17016a974cbbc647 (git) Affected: f314bfee81b1bf8e01168177b2f65f24eb8da63a , < 4b177911eb9f799e9841c2f87c75b08cb112757a (git) Affected: f314bfee81b1bf8e01168177b2f65f24eb8da63a , < 976df67f463db1fddaf2a32fb04f57ad2891a23d (git) |
guessed | |
| Linux | Linux |
Affected:
5.19
Unaffected: 0 , < 5.19 (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.153 , ≤ 6.6.* (semver) Unaffected: 6.12.105 , ≤ 6.12.* (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/tls/tls_sw.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a808aadff634c7a408b2ab84d5919e9a741fdb5b",
"status": "affected",
"version": "f314bfee81b1bf8e01168177b2f65f24eb8da63a",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
"version": "f314bfee81b1bf8e01168177b2f65f24eb8da63a",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
"version": "f314bfee81b1bf8e01168177b2f65f24eb8da63a",
"versionType": "git"
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{
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"status": "affected",
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/tls/tls_sw.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.19"
},
{
"lessThan": "5.19",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.184",
"versionStartIncluding": "5.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.153",
"versionStartIncluding": "5.19",
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},
{
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},
{
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.10",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "5.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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-\u003easync_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."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-04T17:19:14.391Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
],
"title": "net/tls: Fail tls_sw_splice_read() after a failed async decrypt",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-80904",
"datePublished": "2026-09-04T17:19:14.391Z",
"dateReserved": "2026-08-26T14:34:25.800Z",
"dateUpdated": "2026-09-04T17:19:14.391Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-80904\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-04T18:17:59.983\",\"lastModified\":\"2026-09-04T18:17:59.983\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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-\u003easync_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\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/tls/tls_sw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"a808aadff634c7a408b2ab84d5919e9a741fdb5b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"06c2a53604fa1dc4820063828d7dadb3675b7af8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"18ae1e95f20867106a28820c208a9cec99dda861\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"82d9269f01ebfd835b6256aa17016a974cbbc647\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"4b177911eb9f799e9841c2f87c75b08cb112757a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f314bfee81b1bf8e01168177b2f65f24eb8da63a\",\"lessThan\":\"976df67f463db1fddaf2a32fb04f57ad2891a23d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/tls/tls_sw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.184\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.153\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.105\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06c2a53604fa1dc4820063828d7dadb3675b7af8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/18ae1e95f20867106a28820c208a9cec99dda861\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4b177911eb9f799e9841c2f87c75b08cb112757a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/82d9269f01ebfd835b6256aa17016a974cbbc647\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/976df67f463db1fddaf2a32fb04f57ad2891a23d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a808aadff634c7a408b2ab84d5919e9a741fdb5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-09-05T00:24:46Z",
"cve": "CVE-2026-80904",
"id": "CVE-2026-80904",
"initial_release_date": "2026-09-05T00:24:46Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-80904",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80904.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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