CVE-2024-49902: jfs: check if leafidx greater than num leaves per dmap tree
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: jfs: check if leafidx greater than num leaves per dmap tree syzbot report a out of bounds in dbSplit, it because dmt_leafidx greater than num leaves per dmap tree, add a checking for dmt_leafidx in dbFindLeaf. Shaggy: Modified sanity check to apply to control pages as well as leaf pages.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| 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 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/058aa89b3318be3d66a103ba7c68d717561e1dc6
- https://git.kernel.org/stable/c/2451e5917c56be45d4add786e2a059dd9c2c37c4
- https://git.kernel.org/stable/c/25d2a3ff02f22e215ce53355619df10cc5faa7ab
- https://git.kernel.org/stable/c/35b91f15f44ce3c01eba058ccb864bb04743e792
- https://git.kernel.org/stable/c/4a7bf6a01fb441009a6698179a739957efd88e38
- https://git.kernel.org/stable/c/7fff9a9f866e99931cf6fa260288e55d01626582
- https://git.kernel.org/stable/c/cb0eb10558802764f07de1dc439c4609e27cb4f0
- https://git.kernel.org/stable/c/d64ff0d2306713ff084d4b09f84ed1a8c75ecc32
- https://git.kernel.org/stable/c/d76b9a4c283c7535ae7c7c9b14984e75402951e1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49902
- https://nvd.nist.gov/vuln/detail/CVE-2024-49902
- https://launchpad.net/bugs/cve/CVE-2024-49902
- https://security-tracker.debian.org/tracker/CVE-2024-49902
- https://ubuntu.com/security/CVE-2024-49902
- https://git.kernel.org/linus/d64ff0d2306713ff084d4b09f84ed1a8c75ecc32
Frequently Asked Questions
What is the severity of CVE-2024-49902?
CVE-2024-49902 has been classified as a medium severity vulnerability due to the potential for out of bounds access in the Linux kernel.
How do I fix CVE-2024-49902?
To address CVE-2024-49902, users should upgrade their Linux kernel to a version that is not affected, such as 6.1.123-1 or newer.
Which versions of the Linux kernel are affected by CVE-2024-49902?
CVE-2024-49902 affects Linux kernel versions from 5.10.227 to 6.11.3, including multiple versions in between.
What components are impacted by CVE-2024-49902?
CVE-2024-49902 impacts the JFS (Journaling File System) functionality within the Linux kernel.
Who reported CVE-2024-49902?
CVE-2024-49902 was reported by Syzbot, which identified the out of bounds access issue.
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