CVE-2024-49902: jfs: check if leafidx greater than num leaves per dmap tree
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 dmtleafidx greater than num leaves per dmap tree, add a checking for dmtleafidx in dbFindLeaf.
Shaggy: Modified sanity check to apply to control pages as well as leaf pages.
Other sources
This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1
Event History
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.