ghsa-8xf7-6cv9-64f7
Vulnerability from github
Published
2024-02-23 15:30
Modified
2024-06-25 21:31
Severity
Details
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix check for attempt to corrupt spilled pointer
When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0].
To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.
{
"affected": [],
"aliases": [
"CVE-2023-52462"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-23T15:15:08Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix check for attempt to corrupt spilled pointer\n\nWhen register is spilled onto a stack as a 1/2/4-byte register, we set\nslot_type[BPF_REG_SIZE - 1] (plus potentially few more below it,\ndepending on actual spill size). So to check if some stack slot has\nspilled register we need to consult slot_type[7], not slot_type[0].\n\nTo avoid the need to remember and double-check this in the future, just\nuse is_spilled_reg() helper.",
"id": "GHSA-8xf7-6cv9-64f7",
"modified": "2024-06-25T21:31:11Z",
"published": "2024-02-23T15:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52462"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2757f17972d87773b3677777f5682510f13c66ef"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/40617d45ea05535105e202a8a819e388a2b1f036"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/67e6707f07354ed1acb4e65552e97c60cf9d69cf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8dc15b0670594543c356567a1a45b0182ec63174"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fc3e3c50a0a4cac1463967c110686189e4a59104"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
Loading...