LoongArch: BPF: Refactor jump offset calculation in tail call
Published Sep 16, 2026
7.8
HIGHCVSS 3.1
EPSS 0.17%
Description
The old macro-based jmp_offset calculation derives the jump distance from a stale prior-pass code stride, which can lead to wrong branch offsets and soft lockups under extra JIT passes.
Fix this by calculating the offset directly on the absolute target: "ctx->offset[insn + 1] - ctx->idx".
To avoid a false 16-bit range check abort during size estimation, add a "ctx->image == NULL" guard to inject a safe dummy offset.
Affected products
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- Version StatusaffectedConstraints-
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- Version
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- Version 6.1.149StatusaffectedConstraints<6.2
- Version 6.12.43StatusaffectedConstraints<6.13
- Version 6.15.11StatusaffectedConstraints<6.16
- Version 6.16.2StatusaffectedConstraints<6.17
- Version 6.6.103StatusaffectedConstraints<6.7
- Version
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- Version 6.17StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.17
- Version 6.18.51StatusunaffectedConstraints<=6.18.*
- Version 7.2.5StatusunaffectedConstraints<=7.2.*
- Version 7.3-rc1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Sep-Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.17% (0.00173) | 6.09th | v5 (v2026.06.15) |
| Sep 17, 2026 | 0.16% (0.00161) | 5.76th | v5 (v2026.06.15) |
No CWE recorded.
References (3)
Change history (0)
No recorded changes yet.