CVE-2024-35863: smb: client: fix potential UAF in is_valid_oplock_break()

Published May 19, 2024
·
Updated

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

smb: client: fix potential UAF in isvalidoplockbreak()

Skip sessions that are being teared down (status == SESEXITING) to avoid UAF.

Other sources

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

smb: client: fix potential UAF in isvalidoplockbreak()

The Linux kernel CVE team has assigned CVE-2024-35863 to this issue.

Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024051938-CVE-2024-35863-7c05@gregkh/T

— Red Hat

Affected Software

117 affected componentsFixes available
Linux Linux kernel<6.1.85
Linux Linux kernel>=6.2<6.6.26
Linux Linux kernel>=6.7<6.8.5
Linux Linux kernel=6.9-rc1
Linux Linux kernel=6.9-rc2
Linux Linux kernel>=6.0<6.1.85
debian/linux<6.1.85-1
6.1.85-1
debian/linux<6.8.9-1
6.8.9-1
debian/linux<6.8.9-1
6.8.9-1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
redhat/kernel<6.1.85
6.1.85
redhat/kernel<6.6.26
6.6.26
redhat/kernel<6.8.5
6.8.5
redhat/kernel<6.9
6.9
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.15*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1011.12~22.04.1
6.8.0-1011.12~22.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1010.10~22.04.1
6.8.0-1010.10~22.04.1
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1009.9~22.04.1
6.8.0-1009.9~22.04.1
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1008.8~22.04.1
6.8.0-1008.8~22.04.1
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-azure-fips*
ubuntu/linux-azure-fips*
ubuntu/linux<6.8.0-38.38
6.8.0-38.38
ubuntu/linux-aws<6.8.0-1011.12
6.8.0-1011.12
ubuntu/linux-azure<6.8.0-1010.10
6.8.0-1010.10
ubuntu/linux-gcp<6.8.0-1010.11
6.8.0-1010.11
ubuntu/linux-gke<6.8.0-1006.9
6.8.0-1006.9
ubuntu/linux-ibm<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-intel<6.8.0-1007.14
6.8.0-1007.14
ubuntu/linux-lowlatency<6.8.0-38.38.1
6.8.0-38.38.1
ubuntu/linux-nvidia<6.8.0-1009.9
6.8.0-1009.9
ubuntu/linux-oem-6.8<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-oracle<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-raspi<6.8.0-1007.7
6.8.0-1007.7
ubuntu/linux-riscv<6.8.0-38.38.1
6.8.0-38.38.1
ubuntu/linux-raspi-realtime<6.8.0-2006.6
6.8.0-2006.6
ubuntu/linux-realtime<6.8.1-1004.4
6.8.1-1004.4
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.85-1
  2. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.8.9-1
  3. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  4. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.1.85
  5. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.6.26
  6. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.8.5
  7. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.9
  8. Upgrade

    Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1011.12~22.04.1
  9. Upgrade

    Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.10~22.04.1
  10. Upgrade

    Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1009.9~22.04.1
  11. Upgrade

    Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8~22.04.1
  12. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38
  13. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 6.8.0-1011.12
  14. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.10
  15. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.11
  16. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 6.8.0-1006.9
  17. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  18. Upgrade

    Upgrade ubuntu/linux-intel to a version that resolves this vulnerability.

    Fixed in 6.8.0-1007.14
  19. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38.1
  20. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1009.9
  21. Upgrade

    Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  22. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  23. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 6.8.0-1007.7
  24. Upgrade

    Upgrade ubuntu/linux-riscv to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38.1
  25. Upgrade

    Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.0-2006.6
  26. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.1-1004.4
  27. Upgrade

    Upgrade Linux kernel smb client to a version that resolves this vulnerability.

    Patch CVE-2024-35863

Event History

May 19, 2024
CVE Published
via MITRE·08:34 AM
Data Sourced
via MITRE·08:34 AM
DescriptionSeverity
Data Sourced
via OSV·09:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
May 20, 2024
Data Sourced
via Red Hat·01:38 PM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2024-35863?

CVE-2024-35863 is classified as a high severity vulnerability due to potential use-after-free (UAF) issues.

2

How do I fix CVE-2024-35863?

To fix CVE-2024-35863, update your kernel to version 6.1.85, 6.6.26, 6.8.5, or 6.9.

3

What are the affected systems for CVE-2024-35863?

CVE-2024-35863 affects Linux kernel versions below 6.1.85, 6.6.26, 6.8.5, and 6.9.

4

What does CVE-2024-35863 impact?

CVE-2024-35863 impacts the stability and security of applications using the SMB protocol on affected Linux kernel versions.

5

Is CVE-2024-35863 exploitable remotely?

Yes, CVE-2024-35863 can be exploited remotely, which makes it critical to apply the necessary updates.

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