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Vulnerability · Published Mar 27, 2025 · Assigned by Linux

CVE-2023-52974scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress

High 7.8

In plain English

A high-severity use-after-free in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 78.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress If during iscsi_sw_tcp_session_create() iscsi_tcp_r2tpool_alloc() fails, userspace could be accessing the host's ipaddress attr. If we then free the session via iscsi_session_teardown() while userspace is still accessing the session we will hit a use after free bug. Set the tcp_sw_host->session after we have completed session creation and can no longer fail.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.11-1DEBIAN-CVE-2023-52974
Debian:13linux6.1.11-1DEBIAN-CVE-2023-52974
Debian:14linux6.1.11-1DEBIAN-CVE-2023-52974
Ubuntu:22.04:LTSlinux5.15.0-72.79UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-aws5.15.0-1036.40UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure5.15.0-1038.45UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1038.45.1UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gcp5.15.0-1034.42UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gke5.15.0-1033.38UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1020.25UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-ibm5.15.0-1030.33UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1030.35UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-kvm5.15.0-1033.38UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-72.79UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1025.25UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oracle5.15.0-1035.41UBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-raspi5.15.0-1029.31UBUNTU-CVE-2023-52974
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52974
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52974
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52974

Affected products (as reported)

VendorProductVersions
Linux Linux a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before 496af9d3682ed4c28fb734342a09e6cc0c056ea4a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before 6abd4698f4c8a78e7bbfc421205c060c199554a0a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before d4d765f4761f9e3a2d62992f825aeee593bcb6b9a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before 9758ffe1c07b86aefd7ca8e40d9a461293427ca0a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before 0aaabdb900c7415caa2006ef580322f7eac5f6b6a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before 61e43ebfd243bcbad11be26bd921723027b77441a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 – before f484a794e4ee2a9ce61f52a78e810ac45f3fe3b3
Linux Linux 2.6.39

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References