CVE-2024-50088: btrfs: fix uninitialized pointer free in add_inode_ref()
First published: Tue Oct 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix uninitialized pointer free in add_inode_ref() The add_inode_ref() function does not initialize the "name" struct when it is declared. If any of the following calls to "read_one_inode() returns NULL, dir = read_one_inode(root, parent_objectid); if (!dir) { ret = -ENOENT; goto out; } inode = read_one_inode(root, inode_objectid); if (!inode) { ret = -EIO; goto out; } then "name.name" would be freed on "out" before being initialized. out: ... kfree(name.name); This issue was reported by Coverity with CID 1526744.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.1.57<6.1.114 | |
| Linux Kernel | >=6.2<6.6.58 | |
| Linux Kernel | >=6.7<6.11.5 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| 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/12cf028381aa19bc38465341512c280256e8d82d
- https://git.kernel.org/stable/c/e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa
- https://git.kernel.org/stable/c/a941f3d5b1469c60a7e70e775584f110b47e0d16
- https://git.kernel.org/stable/c/66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50088
- https://nvd.nist.gov/vuln/detail/CVE-2024-50088
- https://launchpad.net/bugs/cve/CVE-2024-50088
- https://security-tracker.debian.org/tracker/CVE-2024-50088
- https://ubuntu.com/security/CVE-2024-50088
- https://git.kernel.org/linus/66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4
Frequently Asked Questions
What is the severity of CVE-2024-50088?
CVE-2024-50088 has been assigned a high severity rating due to the risk of uninitialized pointer free leading to potential crashes or code execution.
How do I fix CVE-2024-50088?
To fix CVE-2024-50088, update the Linux kernel to a version that includes the patch for this vulnerability.
Which versions of the Linux kernel are affected by CVE-2024-50088?
CVE-2024-50088 affects Linux kernel versions from 6.1.57 to 6.1.114, 6.2 to 6.6.58, and versions between 6.7 to 6.11.5, including 6.12-rc1, 6.12-rc2, and 6.12-rc3.
What is the impact of CVE-2024-50088 on my system?
The impact of CVE-2024-50088 may include system crashes or potential execution of arbitrary code due to the handling of uninitialized pointers.
Are there any workarounds for CVE-2024-50088?
There are no known workarounds for CVE-2024-50088; the recommended action is to apply the necessary kernel update.
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