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CVE-2021-27365

HIGH
7.8
CVSS Score
Published: March 7, 2021 at 04:22 AM UTC
Updated: July 30, 2026 at 07:39 PM UTC
6 products affected across 4 vendorsLinux KernelDebian LinuxCloud Backup

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Severity
HIGH7.8
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
9.0
Linux Kernel· Linux
95%
v < 4.4.2604.10 ≤ v < 4.14.2244.15 ≤ v < 4.19.1794.20 ≤ v < 5.4.1034.5 ≤ v < 4.9.2605.11 ≤ v < 5.11.45.5 ≤ v < 5.10.21
Affected range stops below 4.14.224, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.179, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.260, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.260, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.21, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.11.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.103, so it looks safe — our inference, not a vendor statement
Cloud Backup· NetAppdrupal
95%
All versions
Solidfire Baseboard Management Controller Firmware· NetApp
95%
All versions
netapp-solidfire-baseboard-management-controller (same device)
Tekelec Platform Distribution· Oracle
95%
7.4.0 ≤ v ≤ 7.7.1
Solidfire Baseboard Management Controller· NetAppdevice
80%
All versions

References (10)

x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.suse.com/show_bug.cgi?id=1182715
x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210409-0001/

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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