CVE-2021-27363

Katalog CVE

CVSS 4.4 · Medium EPSS 0,71%

Kerentanan pada linux kernel, debian linux +2 lainnya. Skor CVSS 3.1 4.4 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

7 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.4 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L · uraikan di kalkulator

EPSS (30 hari)

0,71% peluang dieksploitasi; lebih tinggi dari 52,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588... mailing list · patch · advisory vendor
• http://www.openwall.com/lists/oss-security/2021/03/06/1 mailing list · patch · advisory pihak ketiga
• http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html advisory pihak ketiga · vdb entry
• https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html exploit · advisory pihak ketiga
• https://bugzilla.suse.com/show_bug.cgi?id=1182716 issue tracking · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210409-0001/ advisory pihak ketiga