bpf: Free special fields when update [lru_,]percpu_hash maps
Priority LOW 22Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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()'.
Why it matters now
EPSS 0.00187 8th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.120, 6.12.63, 6.17.13 +2Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.120, 6.12.63, 6.17.13, 6.18.2, 6.19
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68744
- 2026-10-03 Alias added: GHSA-99pp-v74j-jmgv
References
Other 5
- https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c
- https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7
- https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68
- https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e
- https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a
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- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-68744 · CVE Program
- CVE-2025-68744 · NVD
- FIRST EPSS
- GHSA-99pp-v74j-jmgv · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68744 · Red Hat security data · CC BY 4.0
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