ghsa-cw63-cpqx-9vx9
Vulnerability from github
Published
2022-05-13 01:42
Modified
2022-05-13 01:42
Severity ?
Details
The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.
{ "affected": [], "aliases": [ "CVE-2017-12190" ], "database_specific": { "cwe_ids": [ "CWE-400", "CWE-772" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2017-11-22T18:29:00Z", "severity": "MODERATE" }, "details": "The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.", "id": "GHSA-cw63-cpqx-9vx9", "modified": "2022-05-13T01:42:38Z", "published": "2022-05-13T01:42:38Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12190" }, { "type": "WEB", "url": "https://github.com/torvalds/linux/commit/2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058" }, { "type": "WEB", "url": "https://github.com/torvalds/linux/commit/95d78c28b5a85bacbc29b8dba7c04babb9b0d467" }, { "type": "WEB", "url": "https://usn.ubuntu.com/3583-2" }, { "type": "WEB", "url": "https://usn.ubuntu.com/3583-1" }, { "type": "WEB", "url": "https://usn.ubuntu.com/3582-2" }, { "type": "WEB", "url": "https://usn.ubuntu.com/3582-1" }, { "type": "WEB", "url": "https://support.f5.com/csp/article/K93472064?utm_source=f5support\u0026amp;utm_medium=RSS" }, { "type": "WEB", "url": "https://support.f5.com/csp/article/K93472064?utm_source=f5support\u0026amp%3Butm_medium=RSS" }, { "type": "WEB", "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html" }, { "type": "WEB", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1495089" }, { "type": "WEB", "url": "https://access.redhat.com/security/cve/CVE-2017-12190" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2019:1190" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2019:1170" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2018:1854" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2018:1062" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2018:0676" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2018:0654" }, { "type": "WEB", "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058" }, { "type": "WEB", "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95d78c28b5a85bacbc29b8dba7c04babb9b0d467" }, { "type": "WEB", "url": "http://seclists.org/oss-sec/2017/q4/52" }, { "type": "WEB", "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8" }, { "type": "WEB", "url": "http://www.securityfocus.com/bid/101911" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "type": "CVSS_V3" } ] }
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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.