CVE-2024-27046: nfp: flower: handle acti_netdevs allocation failure
First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: nfp: flower: handle acti_netdevs allocation failure The kmalloc_array() in nfp_fl_lag_do_work() will return null, if the physical memory has run out. As a result, if we dereference the acti_netdevs, the null pointer dereference bugs will happen. This patch adds a check to judge whether allocation failure occurs. If it happens, the delayed work will be rescheduled and try again.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.19.311 | 4.19.311 |
| redhat/kernel | <5.4.273 | 5.4.273 |
| redhat/kernel | <5.10.214 | 5.10.214 |
| redhat/kernel | <5.15.153 | 5.15.153 |
| redhat/kernel | <6.1.83 | 6.1.83 |
| redhat/kernel | <6.6.23 | 6.6.23 |
| redhat/kernel | <6.7.11 | 6.7.11 |
| redhat/kernel | <6.8.2 | 6.8.2 |
| redhat/kernel | <6.9 | 6.9 |
| Linux Kernel | >=4.18<4.19.311 | |
| Linux Kernel | >=4.20<5.4.273 | |
| Linux Kernel | >=5.5<5.10.214 | |
| Linux Kernel | >=5.11<5.15.153 | |
| Linux Kernel | >=5.16<6.1.83 | |
| Linux Kernel | >=6.2<6.6.23 | |
| Linux Kernel | >=6.7<6.7.11 | |
| Linux Kernel | >=6.8<6.8.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/0d387dc503f9a53e6d1f6e9dd0292d38f083eba5
- https://git.kernel.org/stable/c/3b1e8a617eb0f4cdc19def530047a95b5abde07d
- https://git.kernel.org/stable/c/408ba7fd04f959c61b50db79c983484312fea642
- https://git.kernel.org/stable/c/84e95149bd341705f0eca6a7fcb955c548805002
- https://git.kernel.org/stable/c/928705e341010dd910fdece61ccb974f494a758f
- https://git.kernel.org/stable/c/9d8eb1238377cd994829f9162ae396a84ae037b2
- https://git.kernel.org/stable/c/c8df9203bf22c66fa26e8d8c7f8ce181cf88099d
- https://git.kernel.org/stable/c/c9b4e220dd18f79507803f38a55d53b483f6c9c3
- https://git.kernel.org/stable/c/d746889db75a76aeee95fb705b8e1ac28c684a2e
- https://launchpad.net/bugs/cve/CVE-2024-27046
- https://access.redhat.com/security/cve/CVE-2024-27046
- https://lore.kernel.org/linux-cve-announce/2024050113-CVE-2024-27046-4694@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2278436
- https://access.redhat.com/errata/RHSA-2024:4928
- https://access.redhat.com/errata/RHSA-2024:5365
- https://access.redhat.com/errata/RHSA-2024:5364
- https://bugzilla.redhat.com/show_bug.cgi?id=2278435
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27046
- https://nvd.nist.gov/vuln/detail/CVE-2024-27046
- https://security-tracker.debian.org/tracker/CVE-2024-27046
- https://ubuntu.com/security/CVE-2024-27046
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://git.kernel.org/linus/84e95149bd341705f0eca6a7fcb955c548805002
Frequently Asked Questions
What is the severity of CVE-2024-27046?
CVE-2024-27046 has a medium severity rating due to its impact on kernel stability.
How do I fix CVE-2024-27046?
To fix CVE-2024-27046, update your Linux kernel to version 4.19.311 or later, or 5.4.273 or later, or 5.10.214 or later, or 5.15.153 or later.
Which Linux kernel versions are affected by CVE-2024-27046?
CVE-2024-27046 affects Linux kernel versions prior to 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, and later versions.
What systems are impacted by CVE-2024-27046?
CVE-2024-27046 impacts systems utilizing the affected versions of the Linux kernel, primarily on Red Hat and Debian distributions.
Is there a workaround for CVE-2024-27046 if I can't update?
Currently, no specific workaround for CVE-2024-27046 is recommended, so it is advised to apply the necessary updates as soon as possible.
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