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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 2.6.39 | 4.14.306 |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.1.11-1 | — |
| Debian 13 | linux | 6.1.11-1 | — |
| Debian 12 | linux | 6.1.11-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1017.19 | — |
| Ubuntu 24.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-72.79 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1036.40 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1038.45 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1038.45.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1034.42 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1033.38 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1020.25 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1030.33 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1030.35 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1025.25 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1035.41 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1029.31 | — |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-149.166 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1102.110 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1036.40~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1108.114 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1038.45~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1064.70 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1105.114 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1034.42~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-72.79~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1049.54 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1030.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1017.18 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1091.97 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1101.110 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1035.41~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1085.96 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1033.37~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1024.28 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-211.222 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1156.169 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1103.111~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1165.180 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1108.114~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1150.166 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1105.114~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-149.166~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1049.54~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1140.145 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1119.130 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1101.110~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1085.96~18.04.1 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1028.33 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1038.41 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1102.110+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1108.114+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1077.86 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1105.114+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2095.101 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2074.80 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1111.122 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2058.63 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1091.98 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-243.277 | — |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1159.174 | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1156.169~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1165.180~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1150.166~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-211.222~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1122.132 | — |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1119.130~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1121.127 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1165.180~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-243.277~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | kernel-rt +12 | 5.14.0-70.85.1.rt21.156.el9_0 | RHSA-2024:0431 |
| RHEL 9.0 EUS | perf +29 | 5.14.0-70.85.1.el9_0 | RHSA-2024:0432 |
| RHEL 8.8 EUS | perf +26 | 4.18.0-477.43.1.el8_8 | RHSA-2024:0575 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.255.1 | SUSE-SU-2025:1293-1 |
| SLES 11 SP4 | kernel-ec2 +5 | 3.0.101-108.183.1 | SUSE-SU-2025:02099-1 |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.91.1 | SUSE-SU-2025:1176-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.205.1 | SUSE-SU-2025:1194-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.1 | kernel-rt +1 | 5.3.18-150300.205.1 | SUSE-SU-2025:1194-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_25 | 1-150500.11.3.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_39 | 1-150400.9.3.1 | SUSE-SU-2025:1195-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_56 | 1-150300.7.3.1 | SUSE-SU-2025:1263-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.255.1 | SUSE-SU-2025:1293-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_67 | 1-8.5.1 | SUSE-SU-2025:1293-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Server 4.3 | kernel-syms +3 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +2 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.309-231.529 | 1.0-0.amzn2 | ALAS2-2023-1987 |
| Amazon Linux 2 | perf +8 | 4.14.309-231.529.amzn2 | ALAS2-2023-1987 |
Advisories 13
- RHSA-2024:0575 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2024:0432 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2024:0431 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2025-0649 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 3, 2026
- ALAS2-2023-1987 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 8, 2026
- SUSE-SU-2025:02099-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1194-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1176-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1195-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1293-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1263-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Apr 16, 2025
References
- https://git.kernel.org/stable/c/496af9d3682ed4c28fb734342a09e6cc0c056ea4
- https://git.kernel.org/stable/c/6abd4698f4c8a78e7bbfc421205c060c199554a0
- https://git.kernel.org/stable/c/d4d765f4761f9e3a2d62992f825aeee593bcb6b9
- https://git.kernel.org/stable/c/9758ffe1c07b86aefd7ca8e40d9a461293427ca0
- https://git.kernel.org/stable/c/0aaabdb900c7415caa2006ef580322f7eac5f6b6
- https://git.kernel.org/stable/c/61e43ebfd243bcbad11be26bd921723027b77441
- https://git.kernel.org/stable/c/f484a794e4ee2a9ce61f52a78e810ac45f3fe3b3