ghsa-rjjw-vjj8-q96x
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net: tls: handle backlogging of crypto requests
Since we're setting the CRYPTO_TFM_REQ_MAY_BACKLOG flag on our requests to the crypto API, crypto_aead_{encrypt,decrypt} can return -EBUSY instead of -EINPROGRESS in valid situations. For example, when the cryptd queue for AESNI is full (easy to trigger with an artificially low cryptd.cryptd_max_cpu_qlen), requests will be enqueued to the backlog but still processed. In that case, the async callback will also be called twice: first with err == -EINPROGRESS, which it seems we can just ignore, then with err == 0.
Compared to Sabrina's original patch this version uses the new tls_*crypt_async_wait() helpers and converts the EBUSY to EINPROGRESS to avoid having to modify all the error handling paths. The handling is identical.
{
"affected": [],
"aliases": [
"CVE-2024-26584"
],
"database_specific": {
"cwe_ids": [
"CWE-755"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-21T15:15:09Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tls: handle backlogging of crypto requests\n\nSince we\u0027re setting the CRYPTO_TFM_REQ_MAY_BACKLOG flag on our\nrequests to the crypto API, crypto_aead_{encrypt,decrypt} can return\n -EBUSY instead of -EINPROGRESS in valid situations. For example, when\nthe cryptd queue for AESNI is full (easy to trigger with an\nartificially low cryptd.cryptd_max_cpu_qlen), requests will be enqueued\nto the backlog but still processed. In that case, the async callback\nwill also be called twice: first with err == -EINPROGRESS, which it\nseems we can just ignore, then with err == 0.\n\nCompared to Sabrina\u0027s original patch this version uses the new\ntls_*crypt_async_wait() helpers and converts the EBUSY to\nEINPROGRESS to avoid having to modify all the error handling\npaths. The handling is identical.",
"id": "GHSA-rjjw-vjj8-q96x",
"modified": "2024-06-03T18:55:49Z",
"published": "2024-02-21T15:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26584"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13eca403876bbea3716e82cdfe6f1e6febb38754"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ade391adc584f17b5570fd205de3ad029090368"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8590541473188741055d27b955db0777569438e3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ab6397f072e5097f267abf5cb08a8004e6b17694"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cd1bbca03f3c1d845ce274c0d0a66de8e5929f72"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OX4EWCYDZRTOEMC2C6OF7ZACAP23SUB5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}