high
7.8
CWE
416 415
Advisory Published
CVE Published
Updated

CVE-2023-5345: Use-after-free in Linux kernel's fs/smb/client component

First published: Tue Oct 03 2023(Updated: )

A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.

Credit: cve-coordination@google.com cve-coordination@google.com cve-coordination@google.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<6.6
Linux Linux kernel=6.6-rc1
Linux Linux kernel=6.6-rc2
Linux Linux kernel=6.6-rc3
redhat/kernel<6.6
6.6
IBM Security Guardium<=12.0
Linux Linux kernel>=6.0.16<6.1.56
Linux Linux kernel>=6.2<6.5.6
Fedoraproject Fedora=37
Fedoraproject Fedora=38
Fedoraproject Fedora=39
ubuntu/linux<6.2.0-37.38
6.2.0-37.38
ubuntu/linux<6.5.0-13.13
6.5.0-13.13
ubuntu/linux<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws<6.2.0-1016.16
6.2.0-1016.16
ubuntu/linux-aws<6.5.0-1010.10
6.5.0-1010.10
ubuntu/linux-aws<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-6.2<6.2.0-1016.16~22.04.1
6.2.0-1016.16~22.04.1
ubuntu/linux-aws-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-6.5<6.5.0-1010.10~22.04.1
6.5.0-1010.10~22.04.1
ubuntu/linux-aws-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-fips<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-aws-hwe<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure<5.15.0-1054.62
5.15.0-1054.62
ubuntu/linux-azure<6.2.0-1017.17
6.2.0-1017.17
ubuntu/linux-azure<6.5.0-1009.9
6.5.0-1009.9
ubuntu/linux-azure<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-4.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-5.15<5.15.0-1054.62~20.04.1
5.15.0-1054.62~20.04.1
ubuntu/linux-azure-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-6.2<6.2.0-1017.17~22.04.1
6.2.0-1017.17~22.04.1
ubuntu/linux-azure-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-6.5<6.5.0-1009.9~22.04.1
6.5.0-1009.9~22.04.1
ubuntu/linux-azure-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-fde<5.15.0-1054.62.1
5.15.0-1054.62.1
ubuntu/linux-azure-fde<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-fde-5.15<5.15.0-1054.62~20.04.1.1
5.15.0-1054.62~20.04.1.1
ubuntu/linux-azure-fde-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-fde-6.2<6.2.0-1017.17~22.04.1.1
6.2.0-1017.17~22.04.1.1
ubuntu/linux-azure-fde-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-azure-fips<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-bluefield<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-fips<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp<6.2.0-1019.21
6.2.0-1019.21
ubuntu/linux-gcp<6.5.0-1009.9
6.5.0-1009.9
ubuntu/linux-gcp<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-4.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-5.19<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-6.2<6.2.0-1019.21~22.04.1
6.2.0-1019.21~22.04.1
ubuntu/linux-gcp-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gcp-fips<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gke<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gkeop<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-gkeop-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-hwe<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-hwe-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-hwe-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-hwe-6.2<6.2.0-37.38~22.04.1
6.2.0-37.38~22.04.1
ubuntu/linux-hwe-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-hwe-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-ibm<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-ibm-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-ibm-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-intel<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-intel-iot-realtime<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-intel-iotg<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-intel-iotg-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-iot<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-kvm<6.2.0-1017.17
6.2.0-1017.17
ubuntu/linux-kvm<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-laptop<6.5.0-1006.9
6.5.0-1006.9
ubuntu/linux-laptop<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lowlatency<6.2.0-1017.17
6.2.0-1017.17
ubuntu/linux-lowlatency<6.5.0-13.13.1
6.5.0-13.13.1
ubuntu/linux-lowlatency<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lowlatency-hwe-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lowlatency-hwe-6.2<6.2.0-1017.17~22.04.1
6.2.0-1017.17~22.04.1
ubuntu/linux-lowlatency-hwe-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lowlatency-hwe-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lowlatency-hwe-6.8<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-lts-xenial<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-nvidia<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-nvidia-6.2<6.2.0-1012.12
6.2.0-1012.12
ubuntu/linux-nvidia-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-nvidia-6.5<6.5.0-1007.7
6.5.0-1007.7
ubuntu/linux-nvidia-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-nvidia-6.8<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-nvidia-lowlatency<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oem-6.1<6.1.0-1025.25
6.1.0-1025.25
ubuntu/linux-oem-6.1<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oem-6.5<6.5.0-1008.8
6.5.0-1008.8
ubuntu/linux-oem-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oem-6.8<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oracle<6.2.0-1016.17
6.2.0-1016.17
ubuntu/linux-oracle<6.5.0-1012.12
6.5.0-1012.12
ubuntu/linux-oracle<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oracle-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oracle-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-oracle-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-raspi<6.2.0-1017.19
6.2.0-1017.19
ubuntu/linux-raspi<6.5.0-1007.9
6.5.0-1007.9
ubuntu/linux-raspi<6.7.0-1001.1
6.7.0-1001.1
ubuntu/linux-raspi<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-raspi-5.4<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-raspi-realtime<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-realtime<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-riscv<6.2.0-37.38.1
6.2.0-37.38.1
ubuntu/linux-riscv<6.5.0-13.13.1
6.5.0-13.13.1
ubuntu/linux-riscv<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-riscv-5.15<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-riscv-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-riscv-6.8<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-starfive<6.2.0-1009.10
6.2.0-1009.10
ubuntu/linux-starfive<6.5.0-1004.5
6.5.0-1004.5
ubuntu/linux-starfive<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-starfive-6.2<6.2.0-1009.10~22.04.1
6.2.0-1009.10~22.04.1
ubuntu/linux-starfive-6.2<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-starfive-6.5<6.6~<6.5.6
6.6~
6.5.6
ubuntu/linux-xilinx-zynqmp<6.6~<6.5.6
6.6~
6.5.6
debian/linux
5.10.223-1
6.1.106-3
6.1.99-1
6.10.6-1
6.10.7-1

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6e43b8aa7cd3c3af686caf0c2e11819a886d705

Remedy

https://kernel.dance/e6e43b8aa7cd3c3af686caf0c2e11819a886d705

Remedy

https://git.kernel.org/linus/a4e430c8c8ba96be8c6ec4f2eb108bb8bcbee069

Remedy

https://git.kernel.org/linus/e6e43b8aa7cd3c3af686caf0c2e11819a886d705

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-5345?

    The severity of CVE-2023-5345 is high, with a CVSS score of 7.8.

  • How can the use-after-free vulnerability in the Linux kernel's fs/smb/client component be exploited?

    The use-after-free vulnerability can be exploited to achieve local privilege escalation.

  • What is the impact of CVE-2023-5345?

    CVE-2023-5345 can lead to local privilege escalation.

  • Which versions of the Linux kernel are affected by CVE-2023-5345?

    Linux kernel versions 6.6, 6.6-rc1, 6.6-rc2, and 6.6-rc3 are affected by CVE-2023-5345.

  • How can I fix CVE-2023-5345?

    We recommend upgrading to a patched version of the Linux kernel to fix CVE-2023-5345.

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