Vulnerability details
CVE-2026-89906
Linux Linux
LoongArch: BPF: Refactor jump offset calculation in tail call
CVSS 3.1
7.8High
Official description
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Refactor jump offset calculation in tail call 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 1a782fa32e644aa9fbae6c8488f3e61221ac96e1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.17 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 9262e3e04621558e875eb5afb5e726b648cd5949 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 17c010fe45def335fe03a0718935416b04c7f349 ≤ v < 50fbc294e4e96246d60cd66f98acf043a362e3a0 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.1.149 ≤ v < 6.2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.12.43 ≤ v < 6.12.114 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.15.11 ≤ v < 6.16 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.16.2 ≤ v < 6.17 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.6.103 ≤ v < 6.6.160 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 ≤ v < 96f44d493c280ea161569c43d7ed0f3b0815803a | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 ≤ v < 37d545d12f21c4d50612ecaebd7ae1e5bf91b2d8 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 ≤ v < 882b8912b7e92341fdb115ba0e2e5142a28684ff | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f83d469e16bb1f75991ca67c56786fb2aaa42bea ≤ v < 89819868cde78cb2f748533785a46a3430873f20 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/50fbc294e4e96246d60cd66f98acf043a362e3a0
- https://git.kernel.org/stable/c/89819868cde78cb2f748533785a46a3430873f20
- https://git.kernel.org/stable/c/882b8912b7e92341fdb115ba0e2e5142a28684ff
- https://git.kernel.org/stable/c/96f44d493c280ea161569c43d7ed0f3b0815803a
- https://git.kernel.org/stable/c/37d545d12f21c4d50612ecaebd7ae1e5bf91b2d8
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Details
- Published
- 2026-09-16
- Last updated
- 2026-10-21
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.17%
Probability of exploitation in 30 days
7%
Percentile (among all CVEs)
Weaknesses (CWE)
- —