GHSA-PMWJ-R76W-M8F7
Vulnerability from github – Published: 2024-08-22 06:30 – Updated: 2024-08-22 21:31In the Linux kernel, the following vulnerability has been resolved:
bpf: Add schedule points in batch ops
syzbot reported various soft lockups caused by bpf batch operations.
INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier
Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them.
Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop.
This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.
{
"affected": [],
"aliases": [
"CVE-2022-48939"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-22T04:15:17Z",
"severity": "LOW"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add schedule points in batch ops\n\nsyzbot reported various soft lockups caused by bpf batch operations.\n\n INFO: task kworker/1:1:27 blocked for more than 140 seconds.\n INFO: task hung in rcu_barrier\n\nNothing prevents batch ops to process huge amount of data,\nwe need to add schedule points in them.\n\nNote that maybe_wait_bpf_programs(map) calls from\ngeneric_map_delete_batch() can be factorized by moving\nthe call after the loop.\n\nThis will be done later in -next tree once we get this fix merged,\nunless there is strong opinion doing this optimization sooner.",
"id": "GHSA-pmwj-r76w-m8f7",
"modified": "2024-08-22T21:31:29Z",
"published": "2024-08-22T06:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48939"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
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