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Unscored CVE-2021-47198 EUVD-2021-33846GHSA-xrhc-fgm3-x2h4

scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine

Published Apr 10, 2024 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-intel-5.13 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-nvidia-6.2 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-raspi2 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine

An error is detected with the following report when unloading the driver:
"KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b"

The NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg_fab_ctrl_node(), but the
flag is not cleared upon completion of the login.

This allows a second call to lpfc_unreg_rpi() to proceed with nlp_rpi set
to LPFC_RPI_ALLOW_ERROR. This results in a use after free access when used
as an rpi_ids array index.

Fix by clearing the NLP_REG_LOGIN_SEND nlp_flag in
lpfc_mbx_cmpl_fc_reg_login().

Affected products

VendorProductAffectedFixed
Linux Linux 5.14 5.15.5

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.15.5-1 —
Debian 13 linux 5.15.5-1 —
Debian 12 linux 5.15.5-1 —
ReleasePackageFixed inAdvisory
Ubuntu 22.04 LTS linux-riscv +20 No fix yet —
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.62.2 SUSE-SU-2024:1659-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.51.1 SUSE-SU-2024:1644-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.62.2.150500.6.27.2 SUSE-SU-2024:1659-1
SLES 15 SP5 kernel-syms 5.14.21-150500.55.62.1 SUSE-SU-2024:1659-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SLES 15 SP3 kernel-64kb +6 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLES 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.216.1 SUSE-SU-2024:1870-1
Show 22 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLES for SAP 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLES for SAP 15 SP3 kernel-syms +4 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.182.1 SUSE-SU-2024:1646-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.62.2 SUSE-SU-2024:1659-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.62.2.150500.6.27.2 SUSE-SU-2024:1659-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.52.1 SUSE-SU-2024:1663-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.79.1 SUSE-SU-2024:1647-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.79.1 SUSE-SU-2024:1647-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.169.1 SUSE-SU-2024:1645-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.169.1 SUSE-SU-2024:1645-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.62.2 SUSE-SU-2024:1659-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_14 1-150500.11.5.1 SUSE-SU-2024:1663-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_13 1-150500.11.3.2 SUSE-SU-2024:1659-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_26 1-150400.9.3.1 SUSE-SU-2024:1641-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_44 1-150300.7.3.1 SUSE-SU-2024:1642-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_48 1-150200.5.3.1 SUSE-SU-2024:1650-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_56 1-8.3.1 SUSE-SU-2024:1870-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SLE HPC 15 SP3 kernel-64kb +5 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE HPC 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.52.1 SUSE-SU-2024:1663-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
SUSE Enterprise Storage 7.1 kernel-64kb +5 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SUSE Enterprise Storage 7.1 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +2 5.14.21-150500.55.62.1 SUSE-SU-2024:1659-1
openSUSE Leap 15.5 kernel-64kb +7 5.14.21-150500.55.62.2 SUSE-SU-2024:1659-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.51.1 SUSE-SU-2024:1644-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.62.2.150500.6.27.2 SUSE-SU-2024:1659-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.52.1 SUSE-SU-2024:1663-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.4 kernel-default 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
openSUSE Leap Micro 5.4 kernel-default-base 5.14.21-150400.24.119.1.150400.24.56.1 SUSE-SU-2024:1641-1
openSUSE Leap Micro 5.4 kernel-rt 5.14.21-150400.15.79.1 SUSE-SU-2024:1647-1
openSUSE Leap Micro 5.3 kernel-default 5.14.21-150400.24.119.1 SUSE-SU-2024:1641-1
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openSUSE Leap Micro 5.3 kernel-rt 5.14.21-150400.15.79.1 SUSE-SU-2024:1647-1

Advisories 12

References