CVE-2021-27365

Description

An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.

CVSS breakdown

Affected products

• Debian / debian_linux9.0 – 9.0
• Linux / Linux kernel4.4.260
• NETAPP / cloud_backup
• NETAPP / solidfire_baseboard_management_controller_firmware
• oracle / tekelec_platform_distribution7.4.0 – 7.7.1

References

• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html
• MAILING_LISThttps://www.openwall.com/lists/oss-security/2021/03/06/1
• MISChttps://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
• EXPLOIThttp://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
• MISChttps://security.netapp.com/advisory/ntap-20210409-0001/
• MISChttps://bugzilla.suse.com/show_bug.cgi?id=1182715
• MISChttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
• MISChttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5