Critical · 9.8 CVE-2024-26592 EUVD-2024-23854GHSA-qgq4-32vw-r3w5

ksmbd: fix UAF issue in ksmbd_tcp_new_connection()

Published Feb 22, 2024 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx 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-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

ksmbd: fix UAF issue in ksmbd_tcp_new_connection()

The race is between the handling of a new TCP connection and
its disconnection. It leads to UAF on `struct tcp_transport` in
ksmbd_tcp_new_connection() function.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	5.15	5.15.149

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	6.6.15-1	—
Debian 13	linux	6.6.15-1	—
Debian 12	linux	6.1.76-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu Nvidia-BlueField 22.04 LTS	linux-bluefield	5.15.0-1043.45	—
Ubuntu 22.04 LTS	linux +1	5.15.0-106.116	USN-6766-1
Ubuntu 22.04 LTS	linux-aws	5.15.0-1061.67	USN-6766-3
Ubuntu 22.04 LTS	linux-azure	5.15.0-1063.72	USN-6766-1
Ubuntu 22.04 LTS	linux-azure-6.5	6.5.0-1022.23~22.04.1	USN-6819-1
Ubuntu 22.04 LTS	linux-azure-fde	5.15.0-1063.72.1	USN-6766-1
Ubuntu 22.04 LTS	linux-gcp	5.15.0-1059.67	USN-6766-1
Ubuntu 22.04 LTS	linux-gcp-6.5	6.5.0-1022.24~22.04.1	USN-6818-1
Ubuntu 22.04 LTS	linux-gke +1	5.15.0-1058.63	USN-6766-1
Ubuntu 22.04 LTS	linux-gkeop	5.15.0-1044.51	USN-6766-1
Ubuntu 22.04 LTS	linux-hwe-6.5	6.5.0-41.41~22.04.2	USN-6818-4
Ubuntu 22.04 LTS	linux-ibm +1	5.15.0-1054.57	USN-6766-2, USN-6766-1
Ubuntu 22.04 LTS	linux-intel-iotg	5.15.0-1057.63	USN-6795-1
Ubuntu 22.04 LTS	linux-lowlatency-hwe-6.5	6.5.0-41.41.1~22.04.1	USN-6818-1
Ubuntu 22.04 LTS	linux-nvidia	5.15.0-1054.55	USN-6766-1
Ubuntu 22.04 LTS	linux-nvidia-6.5	6.5.0-1021.22	USN-6818-3
Ubuntu 22.04 LTS	linux-nvidia-tegra	5.15.0-1026.26	—
Ubuntu 22.04 LTS	linux-nvidia-tegra-igx	5.15.0-1015.15	—
Ubuntu 22.04 LTS	linux-oem-6.1	6.1.0-1035.35	USN-6688-1
Ubuntu 22.04 LTS	linux-oem-6.5	6.5.0-1024.25	USN-6819-3
Ubuntu 22.04 LTS	linux-oracle	5.15.0-1059.65	USN-6766-1
Ubuntu 22.04 LTS	linux-oracle-6.5	6.5.0-1024.24~22.04.1	USN-6819-4
Ubuntu 22.04 LTS	linux-riscv +21	No fix yet	—
Ubuntu 22.04 LTS	linux-riscv-6.5	6.5.0-40.40.1~22.04.1	—
Ubuntu 22.04 LTS	linux-starfive-6.5	6.5.0-1015.16~22.04.1	USN-6819-1
Ubuntu 22.04 LTS	linux-xilinx-zynqmp	5.15.0-1030.34	—
Ubuntu 20.04 LTS	linux-aws-5.15	5.15.0-1061.67~20.04.1	USN-6766-3
Ubuntu 20.04 LTS	linux-azure-5.15	5.15.0-1063.72~20.04.1	USN-6766-1
Ubuntu 20.04 LTS	linux-azure-fde-5.15	5.15.0-1063.72~20.04.1.1	USN-6766-1
Ubuntu 20.04 LTS	linux-gcp-5.15	5.15.0-1059.67~20.04.1	USN-6766-1
Ubuntu 20.04 LTS	linux-gke +26	No fix yet	—
Ubuntu 20.04 LTS	linux-gkeop-5.15	5.15.0-1044.51~20.04.1	USN-6766-1
Ubuntu 20.04 LTS	linux-hwe-5.15 +1	5.15.0-106.116~20.04.1	USN-6766-2, USN-6766-1
Ubuntu 20.04 LTS	linux-ibm-5.15	5.15.0-1054.57~20.04.1	USN-6766-1
Ubuntu 20.04 LTS	linux-intel-iotg-5.15	5.15.0-1058.64~20.04.1	USN-6828-1
Ubuntu 20.04 LTS	linux-nvidia-tegra-5.15	5.15.0-1027.27~20.04.1	—
Ubuntu 20.04 LTS	linux-oracle-5.15	5.15.0-1059.65~20.04.1	USN-6766-1
Ubuntu 20.04 LTS	linux-riscv-5.15	5.15.0-1057.61~20.04.1	—
Ubuntu 18.04 LTS	linux-gcp +13	No fix yet	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—

Show 4 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu Pro Realtime 24.04 LTS	linux-raspi-realtime	6.8.0-2001.1	—
Ubuntu Pro Realtime 22.04 LTS	linux-intel-iot-realtime	5.15.0-1054.56	—
Ubuntu Pro Realtime 22.04 LTS	linux-realtime	5.15.0-1062.70	—
Ubuntu Pro FIPS-updates 22.04 LTS	linux-aws-fips	5.15.0-1061.67+fips1	—
Ubuntu Pro FIPS-updates 22.04 LTS	linux-azure-fips	5.15.0-1063.72+fips1	—
Ubuntu Pro FIPS-updates 22.04 LTS	linux-fips	5.15.0-106.116+fips1	—
Ubuntu Pro FIPS-updates 22.04 LTS	linux-gcp-fips	5.15.0-1059.67+fips1	—
Ubuntu Pro FIPS-preview 22.04 LTS	linux-fips +3	No fix yet	—

Advisories 13

USN-6819-4 linux-oracle-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6818-3 linux-nvidia-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6819-3 linux-oem-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6818-1 linux, linux-gcp, linux-gcp-6.5, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6818-4 linux-hwe-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6819-1 linux-azure, linux-azure-6.5, linux-starfive, linux-starfive-6.5 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
USN-6766-1 linux, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
USN-6766-3 linux-aws, linux-aws-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
USN-6828-1 linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
USN-6795-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
USN-6766-2 linux-hwe-5.15, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
USN-6688-1 linux-oem-6.1 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
WID-SEC-2024-0473 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 16, 2026

References