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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Sightings
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.