ghsa-ghrr-3969-mcfp
Vulnerability from github
Published
2022-05-24 17:43
Modified
2022-05-24 17:43
Severity
Details
An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
{
"affected": [],
"aliases": [
"CVE-2021-27363"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-03-07T04:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport\u0027s handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module\u0027s global variables.",
"id": "GHSA-ghrr-3969-mcfp",
"modified": "2022-05-24T17:43:49Z",
"published": "2022-05-24T17:43:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27363"
},
{
"type": "WEB",
"url": "https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html"
},
{
"type": "WEB",
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1182716"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210409-0001"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2021/03/06/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
}
]
}
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