CVE-2024-35863: smb: client: fix potential UAF in is_valid_oplock_break()
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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1 - Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.1.85 - Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.6.26 - Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.8.5 - Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.9 - Upgrade
Upgrade
Linux kernel smb clientto a version that resolves this vulnerability.Patch CVE-2024-35863
Event History
Frequently Asked Questions
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.
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.
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.
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.
Is CVE-2024-35863 exploitable remotely?
Yes, CVE-2024-35863 can be exploited remotely, which makes it critical to apply the necessary updates.