LoongArch: BPF: Refactor jump offset calculation in tail call
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.
CVE-2026-89906
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89906
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "17c010fe45def335fe03a0718935416b04c7f349",
"lessThan": "50fbc294e4e96246d60cd66f98acf043a362e3a0",
"versionType": "git"
},
{
"status": "affected",
"version": "f83d469e16bb1f75991ca67c56786fb2aaa42bea",
"lessThan": "89819868cde78cb2f748533785a46a3430873f20",
"versionType": "git"
},
{
"status": "affected",
"version": "cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3",
"lessThan": "882b8912b7e92341fdb115ba0e2e5142a28684ff",
"versionType": "git"
},
{
"status": "affected",
"version": "cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3",
"lessThan": "96f44d493c280ea161569c43d7ed0f3b0815803a",
"versionType": "git"
},
{
"status": "affected",
"version": "cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3",
"lessThan": "37d545d12f21c4d50612ecaebd7ae1e5bf91b2d8",
"versionType": "git"
},
{
"status": "affected",
"version": "1a782fa32e644aa9fbae6c8488f3e61221ac96e1",
"versionType": "git"
},
{
"status": "affected",
"version": "f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f",
"versionType": "git"
},
{
"status": "affected",
"version": "9262e3e04621558e875eb5afb5e726b648cd5949",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.103",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.43",
"lessThan": "6.12.114",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.149",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.15.11",
"lessThan": "6.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.16.2",
"lessThan": "6.17",
"versionType": "semver"
}
],
"programFiles": [
"arch/loongarch/net/bpf_jit.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/loongarch/net/bpf_jit.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89906
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48563 · Revision 1
- Added to Heist Feed
- Publisher date