LoongArch: BPF: Zero-extend signed ALU32 div/mod results
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Zero-extend signed ALU32 div/mod results ALU32 operations write a 32-bit result and leave the upper 32 bits of the BPF register zero. The LoongArch JIT sign-extends the result of signed ALU32 BPF_DIV and BPF_MOD (off=1), so a negative 32-bit quotient or remainder leaves bits 63:32 set in JITted code while the verifier and interpreter model those bits as zero. Keep sign-extension on the operands, which signed divide needs, and zero-extend the ALU32 result after the divide or modulo instruction, matching the unsigned ALU32 div/mod paths and every other ALU32 operation in this JIT.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.12.114, 6.18.57, 7.1.6, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux for NVIDIA 26 | Affected | No fix planned: Out of support scope |
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68295
- 2026-10-03 Alias added: GHSA-vrqj-mf6p-p2fv
- 2026-10-16 Fix available: Linux/Linux@16656c3d734693be3d8a36dbf9d09142b69f3ddc, Linux/[email protected] · CNA
- 2026-10-16 1 new reference · CNA
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@7577cca85f2d4590c9d9423ba72ef54181a713c9 · CNA
- 2026-10-21 1 new reference · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
More Linux vulnerabilities
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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-2026-68295 · CVE Program
- CVE-2026-68295 · NVD
- FIRST EPSS
- GHSA-vrqj-mf6p-p2fv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68295 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences