ghsa-j9fr-8f9m-c9qc
Vulnerability from github
Published
2022-05-13 01:14
Modified
2022-05-13 01:14
Severity
Details
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
{
"affected": [],
"aliases": [
"CVE-2017-18344"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-26T19:29:00Z",
"severity": "MODERATE"
},
"details": "The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn\u0027t properly validate the sigevent-\u003esigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).",
"id": "GHSA-j9fr-8f9m-c9qc",
"modified": "2022-05-13T01:14:42Z",
"published": "2022-05-13T01:14:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18344"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:2948"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3083"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3096"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3459"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3540"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3586"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3590"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3591"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3742-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3742-2"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/45175"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104909"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041414"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
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