CVE-2021-27365
HIGH 7.8EPSS 2.1%
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 v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 2.10% chance of exploitation in the next 30 days, 81st percentile
- Published
- 2021-03-07
- Updated
- 2024-08-03
Proof-of-concept exploits (2)
- https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
- WhatsWrongAndWhy/CVE-2021-273650★ · 2026-07-21
Security advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e…
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5b…
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1…
- https://bugzilla.suse.com/show_bug.cgi?id=1182715
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- https://security.netapp.com/advisory/ntap-20210409-0001
- https://www.openwall.com/lists/oss-security/2021/03/06/1
- https://www.oracle.com/security-alerts/cpuoct2021.html