CVE-2021-27365

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Summary

CVECVE-2021-27365
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-07 05:15:13 UTC
Updated2026-07-30 19:20:10 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-787 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Application Netapp Cloud Backup - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Kernel Live Patch Security Notice LSN-0075-1 ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
Oracle Critical Patch Update Advisory - October 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch, Vendor Advisory
March 2021 Linux Kernel 5.11.3 Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Bug 1182715 – VUL-0: CVE-2021-27365: kernel-source: iscsi_host_get_param() allows sysfs params larger than 4k af854a3a-2127-422b-91ae-364da2661108 bugzilla.suse.com Issue Tracking, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch, Vendor Advisory
[SECURITY] [DLA 2586-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
oss-security - Linux iscsi security fixes af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
[SECURITY] [DLA 2610-1] linux-4.19 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
New Old Bugs in the Linux Kernel af854a3a-2127-422b-91ae-364da2661108 blog.grimm-co.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159135 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9140)
  • 159136 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9141)
  • 159141 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-1071)
  • 159144 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-1093)
  • 159155 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9164)
  • 159157 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9172)
  • 159158 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9175)
  • 159173 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-9212)
  • 174874 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 38 for SLE 12 SP3) (SUSE-SU-2021:1074-1)
  • 174876 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 5 for SLE 12 SP5) (SUSE-SU-2021:1075-1)
  • 174896 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1177-1)
  • 174897 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1175-1)
  • 174916 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1210-1)
  • 174917 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1211-1)
  • 174919 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1238-1)
  • 174996 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:14724-1)
  • 178507 Debian Security Update for linux-4.19 (DLA 2610-1)
  • 179658 Debian Security Update for linux (CVE-2021-27365)
  • 198303 Ubuntu Security Notification for Linux, Linux-aws, Linux-aws-hwe, Linux-azure, Linux-azure-4.15, Linux-gcp, (USN-4883-1)
  • 198307 Ubuntu Security Notification for Linux, Linux-aws, Linux-aws-5.4, Linux-azure, Linux-azure-5.4, Linux-gcp, (USN-4887-1)
  • 239202 Red Hat Update for kernel (RHSA-2021:1093)
  • 239204 Red Hat Update for kernel-rt (RHSA-2021:1081)
  • 239208 Red Hat Update for kernel-rt (RHSA-2021:1070)
  • 239209 Red Hat Update for kpatch-patch (RHSA-2021:1069)
  • 239213 Red Hat Update for kpatch-patch (RHSA-2021:1173)
  • 239214 Red Hat Update for kernel (RHSA-2021:1171)
  • 239217 Red Hat Update for kernel (RHSA-2021:1071)
  • 239236 Red Hat Update for kpatch-patch (RHSA-2021:1295)
  • 239237 Red Hat Update for kernel (RHSA-2021:1288)
  • 239238 Red Hat Update for kernel (RHSA-2021:1272)
  • 239253 Red Hat Update for kernel-alt (RHSA-2021:1379)
  • 239254 Red Hat Update for kpatch-patch (RHSA-2021:1377)
  • 239255 Red Hat Update for kernel (RHSA-2021:1376)
  • 239271 Red Hat Update for kernel-alt (RHSA-2021:1379)
  • 239343 Red Hat Update for kpatch-patch (RHSA-2021:1532)
  • 239344 Red Hat Update for kernel (RHSA-2021:1531)
  • 239455 Red Hat Update for kernel-rt (RHSA-2021:1279)
  • 257073 CentOS Security Update for kernel (CESA-2021:1071)
  • 352244 Amazon Linux Security Advisory for kernel: ALAS-2021-1487
  • 352254 Amazon Linux Security Advisory for kernel: ALAS2-2021-1616
  • 352324 Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-044
  • 352325 Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-043
  • 352326 Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-042
  • 353100 Amazon Linux Security Advisory for kernel : ALAC2012-2021-024
  • 353101 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2021-025
  • 353102 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2021-026
  • 353150 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-001
  • 390232 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2021-0008)
  • 6140269 AWS Bottlerocket Security Update for kernel (GHSA-756c-f6r7-9j2q)
  • 670269 EulerOS Security Update for kernel (EulerOS-SA-2021-1808)
  • 670320 EulerOS Security Update for kernel (EulerOS-SA-2021-1904)
  • 670345 EulerOS Security Update for kernel (EulerOS-SA-2021-1879)
  • 670375 EulerOS Security Update for kernel (EulerOS-SA-2021-1950)
  • 670396 EulerOS Security Update for kernel (EulerOS-SA-2021-1929)
  • 670416 EulerOS Security Update for kernel (EulerOS-SA-2021-1983)
  • 670634 EulerOS Security Update for kernel (EulerOS-SA-2021-2392)
  • 670936 EulerOS Security Update for kernel (EulerOS-SA-2021-1929)
  • 750004 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1573-1)
  • 750006 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1596-1)
  • 750014 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1623-1)
  • 750015 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1624-1)
  • 750199 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0758-1)
  • 750276 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0532-1)
  • 750650 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1975-1)
  • 750652 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1977-1)
  • 750762 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1977-1)
  • 750766 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1975-1)
  • 900101 CBL-Mariner Linux Security Update for kernel 5.10.52.1
  • 900303 CBL-Mariner Linux Security Update for kernel 5.10.57.1
  • 900321 CBL-Mariner Linux Security Update for kernel 5.10.60.1
  • 901846 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6534-1)
  • 902901 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3954)
  • 906148 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3954-1)
  • 940387 AlmaLinux Security Update for kernel (ALSA-2021:1093)

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