CVE-2021-27365

moderate-risk

Published 2021-03-07

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.

Do I need to act?

0.50% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (4)

Linux Kernel

Debian Linux

Tekelec Platform Distribution

Solidfire Baseboard Management Controller Firmware

Affected Vendors

Debian Linux Oracle Netapp

References (20)

Third Party Advisory http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LS...

Exploit https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html

Issue Tracking https://bugzilla.suse.com/show_bug.cgi?id=1182715

Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec...

Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9...

Mailing List https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

Mailing List https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

Third Party Advisory https://security.netapp.com/advisory/ntap-20210409-0001/

Mailing List https://www.openwall.com/lists/oss-security/2021/03/06/1

Patch https://www.oracle.com/security-alerts/cpuoct2021.html