CVE-2024-49877: ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate When doing cleanup, if flags without OCFS2_BH_READAHEAD, it may trigger NULL pointer dereference in the following ocfs2_set_buffer_uptodate() if bh is NULL.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.20<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 | |
| Linux Kernel | =4.4.204 | |
| Linux Kernel | =4.9.204 | |
| Linux Kernel | =4.14.157 | |
| Linux Kernel | =4.19.87 | |
| 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/01cb2e751cc61ade454c9bc1aaa2eac1f8197112
- https://git.kernel.org/stable/c/190d98bcd61117a78fe185222d162180f061a6ca
- https://git.kernel.org/stable/c/33b525cef4cff49e216e4133cc48452e11c0391e
- https://git.kernel.org/stable/c/46b1edf0536a5291a8ad2337f88c926214b209d9
- https://git.kernel.org/stable/c/4846e72ab5a0726e49ad4188b9d9df091ae78c64
- https://git.kernel.org/stable/c/61b84013e560382cbe7dd56758be3154d43a3988
- https://git.kernel.org/stable/c/d52c5652e7dcb7a0648bbb8642cc3e617070ab49
- https://git.kernel.org/stable/c/df944dc46d06af65a75191183d52be017e6b9dbe
- https://git.kernel.org/stable/c/e68c8323355e8cedfbe0bec7d5a39009f61640b6
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49877
- https://nvd.nist.gov/vuln/detail/CVE-2024-49877
- https://launchpad.net/bugs/cve/CVE-2024-49877
- https://security-tracker.debian.org/tracker/CVE-2024-49877
- https://ubuntu.com/security/CVE-2024-49877
- https://git.kernel.org/linus/33b525cef4cff49e216e4133cc48452e11c0391e
Frequently Asked Questions
What is the severity of CVE-2024-49877?
CVE-2024-49877 has a severity rating that indicates it could lead to a potential NULL pointer dereference in the Linux kernel.
How do I fix CVE-2024-49877?
To fix CVE-2024-49877, update to the latest versions of the Linux kernel that contain the patch for this vulnerability.
What systems are affected by CVE-2024-49877?
CVE-2024-49877 affects multiple versions of the Linux kernel, particularly versions between 4.4.204 and 6.11.3.
Is CVE-2024-49877 a remote vulnerability?
CVE-2024-49877 is not classified as a remote vulnerability, but it can be exploited if an application triggers the condition leading to a NULL pointer dereference.
What are the available remedies for CVE-2024-49877?
Remedies for CVE-2024-49877 include specific patched Linux kernel versions such as 6.1.123-1, 6.1.128-1, and various Debian package updates.
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