CVE-2024-35863: smb: client: fix potential UAF in is_valid_oplock_break()
First published: Sun May 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in is_valid_oplock_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 |
| Linux Kernel | <6.1.85 | |
| Linux Kernel | >=6.2<6.6.26 | |
| Linux Kernel | >=6.7<6.8.5 | |
| Linux Kernel | =6.9-rc1 | |
| Linux Kernel | =6.9-rc2 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/0a15ba88a32fa7a516aff7ffd27befed5334dff2
- https://git.kernel.org/stable/c/16d58c6a7db5050b9638669084b63fc05f951825
- https://git.kernel.org/stable/c/494c91e1e9413b407d12166a61b84200d4d54fac
- https://git.kernel.org/stable/c/69ccf040acddf33a3a85ec0f6b45ef84b0f7ec29
- https://launchpad.net/bugs/cve/CVE-2024-35863
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35863
- https://nvd.nist.gov/vuln/detail/CVE-2024-35863
- https://security-tracker.debian.org/tracker/CVE-2024-35863
- https://ubuntu.com/security/CVE-2024-35863
- https://git.kernel.org/linus/69ccf040acddf33a3a85ec0f6b45ef84b0f7ec29
- https://access.redhat.com/security/cve/CVE-2024-35863
- https://lore.kernel.org/linux-cve-announce/2024051938-CVE-2024-35863-7c05@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2281774
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2281773
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.
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