Answer in brief
CVE-2026-80756 records a Unknown severity vulnerability in selinux: do not cancel a policy conversion that never started. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <2d29983104f06f5b0babcd5a25a0f0408272cd27 || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a4f182f8715cb0819445f0850cd5436828f4bafc || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1059789ae9f99cbbe3a78e361e9c0976beb5958b || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1acc317d67a755a45e32419a15d70e403fa43f0e || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a42932c6aa33d0aac683cacdf1ec7009b955ba5d || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1b4ff94ae7c580c880291519fb0e3e2bd075beef || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <219c96de5d9b6b4af7e8576ad897b774cc3ee9a7 || >=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e | 2d29983104f06f5b0babcd5a25a0f0408272cd27, a4f182f8715cb0819445f0850cd5436828f4bafc, 1059789ae9f99cbbe3a78e361e9c0976beb5958b, 1acc317d67a755a45e32419a15d70e403fa43f0e, a42932c6aa33d0aac683cacdf1ec7009b955ba5d, 1b4ff94ae7c580c880291519fb0e3e2bd075beef, 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7, e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e |
| Linux/Linuxgeneric | 5.10 | Not reported |
Published upstream
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 3, 2026
In the Linux kernel, the following vulnerability has been resolved: selinux: do not cancel a policy conversion that never started sel_write_load() calls selinux_policy_cancel() when sel_make_policy_nodes() fails, and that helper dereferences the outgoing policy to cancel its sidtab conversion. On the first policy load there is no outgoing policy: security_load_policy() returns early for that case, before it converts anything, and state->policy is still NULL. A first load that fails while building the selinuxfs tree therefore takes a NULL dereference in selinux_policy_cancel(), reached from a write(2) to /sys/fs/selinux/load. Skip the cancel when there is no old policy, mirroring the check security_load_policy() already makes before it converts.
Quoted source text, attributed separately from HOL analysis.