CVE-2024-56779
9.8 · CRITICALOverview
CVE-2024-56779 is a critical-severity vulnerability affecting linux linux_kernel. It was published on January 8, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur
The action force umount(umount -f) will attempt to kill all rpc_task even
umount operation may ultimately fail if some files remain open.
Consequently, if an action attempts to open a file, it can potentially
send two rpc_task to nfs server.
NFS CLIENT
thread1 thread2
open("file")
...
nfs4_do_open
_nfs4_do_open
_nfs4_open_and_get_state
_nfs4_proc_open
nfs4_run_open_task
/* rpc_task1 */
rpc_run_task
rpc_wait_for_completion_task
umount -f
nfs_umount_begin
rpc_killall_tasks
rpc_signal_task
rpc_task1 been wakeup
and return -512
_nfs4_do_open // while loop
...
nfs4_run_open_task
/* rpc_task2 */
rpc_run_task
rp
Remediation
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | linux_kernel | >= 0, < 5.4.287 | Affected |
References
Frequently Asked Questions
What is CVE-2024-56779?
CVE-2024-56779 is a critical-severity vulnerability affecting linux linux_kernel. It was published on January 8, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-56779?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2024-56779?
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2024-56779?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-56779 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related CRITICAL CVEs from 2024
View all →An attacker in the wifi vicinity of a target Google Home can spy on the victim, resulting in Elevati
Google Nest WiFi Pro root code-execution & user-data compromise
In checkDebuggingDisallowed of DeviceVersionFragment.java, there is a possible way to access adb
Unrestricted Upload of File with Dangerous Type vulnerability in JS Help Desk JS Help Desk – Best He
In default installations of Microchip maxView Storage Manager (for Adaptec Smart Storage Controllers
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of
Deserialization of Untrusted Data vulnerability in Anton Bond Woocommerce Tranzila Payment Gateway.T
Deserialization of Untrusted Data vulnerability in Tagbox Tagbox – UGC Galleries, Social Media Widge
A vulnerability has been identified in SIMATIC IPC1047E (All versions with maxView Storage Manager <
An issue has been discovered in GitLab CE/EE affecting all versions from 16.1 prior to 16.1.6, 16.2
The Social Warfare plugin for WordPress is vulnerable to Remote Code Execution in versions up to, an
Unrestricted upload of dangerous file types in the C21 Live Encoder and Live Mosaic product, version