CVE-2026-89906
LoongArch: BPF: Refactor jump offset calculation in tail call
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
| Last Updated | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
17c010fe45def335fe03a0718935416b04c7f349 < 50fbc294e4e96246d60cd66f98acf043a362e3a0 f83d469e16bb1f75991ca67c56786fb2aaa42bea < 89819868cde78cb2f748533785a46a3430873f20 cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 < 882b8912b7e92341fdb115ba0e2e5142a28684ff cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 < 96f44d493c280ea161569c43d7ed0f3b0815803a cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 < 37d545d12f21c4d50612ecaebd7ae1e5bf91b2d8 1a782fa32e644aa9fbae6c8488f3e61221ac96e1 f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f 9262e3e04621558e875eb5afb5e726b648cd5949 6.6.103 < 6.6.160 6.12.43 < 6.12.114 6.1.149 < 6.2 6.15.11 < 6.16 6.16.2 < 6.17
Linux / Linux
6.17
References
git.kernel.org: https://git.kernel.org/stable/c/50fbc294e4e96246d60cd66f98acf043a362e3a0 git.kernel.org: https://git.kernel.org/stable/c/89819868cde78cb2f748533785a46a3430873f20 git.kernel.org: https://git.kernel.org/stable/c/882b8912b7e92341fdb115ba0e2e5142a28684ff git.kernel.org: https://git.kernel.org/stable/c/96f44d493c280ea161569c43d7ed0f3b0815803a git.kernel.org: https://git.kernel.org/stable/c/37d545d12f21c4d50612ecaebd7ae1e5bf91b2d8