CVE-2025-68744
Unknown
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()'.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedDec 24, 2025
First seenDec 24, 2025
How to fix
Update
- Linux Linux994d6303ed0b84cbc795bb5becf7ed6de40d3f3c, 3bf1378747e251571e0de15e7e0a6bf2919044e7, 96a5cb7072cabbac5c66ac9318242c3bdceebb68, 4a03d69cece145e4fb527464be29c3806aa3221e, 6af6e49a76c9af7d42eb923703e7648cb2bf401a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a ≤ v < 994d6303ed0b84cbc795bb5becf7ed6de40d3f3c, 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a ≤ v < 3bf1378747e251571e0de15e7e0a6bf2919044e7, 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a ≤ v < 96a5cb7072cabbac5c66ac9318242c3bdceebb68, 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a ≤ v < 4a03d69cece145e4fb527464be29c3806aa3221e, 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a ≤ v < 6af6e49a76c9af7d42eb923703e7648cb2bf401a, 6.4 | 994d6303ed0b84cbc795bb5becf7ed6de40d3f3c, 3bf1378747e251571e0de15e7e0a6bf2919044e7, 96a5cb7072cabbac5c66ac9318242c3bdceebb68, 4a03d69cece145e4fb527464be29c3806aa3221e, 6af6e49a76c9af7d42eb923703e7648cb2bf401a |
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