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CVE-2025-68744

UnknownEPSS 0.17%

Last modified

CVE-2025-68744 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.

Metrics

EPSS Probability
0.17%

6.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a, < 994d6303ed0b84cbc795bb5becf7ed6de40d3f3c; >= 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a, < 3bf1378747e251571e0de15e7e0a6bf2919044e7; >= 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a, < 96a5cb7072cabbac5c66ac9318242c3bdceebb68; >= 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a, < 4a03d69cece145e4fb527464be29c3806aa3221e; >= 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a, < 6af6e49a76c9af7d42eb923703e7648cb2bf401a
LinuxLinux6.4

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-68744?
In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.
How severe is CVE-2025-68744?
Severity scoring for CVE-2025-68744 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-68744?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST