REDHAT-BUG-2324315
First published: Thu Nov 07 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate new SA's prefixlen using SA family when sel.family is unset This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel |
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Reference Links
- https://lore.kernel.org/linux-cve-announce/2024110743-CVE-2024-50142-e0dc@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:10944
- https://access.redhat.com/errata/RHSA-2024:10943
- https://access.redhat.com/errata/RHSA-2024:11486
- https://access.redhat.com/errata/RHSA-2025:1658
- https://bugzilla.redhat.com/show_bug.cgi?id=2324315
Frequently Asked Questions
What is the severity of REDHAT-BUG-2324315?
REDHAT-BUG-2324315 has been classified with high severity due to its potential impact on kernel-level operations.
How do I fix REDHAT-BUG-2324315?
To fix REDHAT-BUG-2324315, you should apply the latest kernel updates provided by Red Hat.
What systems are affected by REDHAT-BUG-2324315?
REDHAT-BUG-2324315 affects systems running vulnerable versions of the Linux kernel.
What does REDHAT-BUG-2324315 involve?
REDHAT-BUG-2324315 involves the validation of new Security Associations' prefix lengths in the Linux kernel.
Is there a workaround for REDHAT-BUG-2324315?
Currently, there are no recommended workarounds for REDHAT-BUG-2324315, and updating the kernel is advised.
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