selinux: do not cancel a policy conversion that never started
Summary
| CVE | CVE-2026-80756 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-03 13:06:15 UTC |
| Updated | 2026-09-03 13:06:15 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.002100000 probability, percentile 0.112230000 (date 2026-09-07)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 2d29983104f06f5b0babcd5a25a0f0408272cd27 git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 a4f182f8715cb0819445f0850cd5436828f4bafc git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 1059789ae9f99cbbe3a78e361e9c0976beb5958b git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 1acc317d67a755a45e32419a15d70e403fa43f0e git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 a42932c6aa33d0aac683cacdf1ec7009b955ba5d git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 1b4ff94ae7c580c880291519fb0e3e2bd075beef git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7 git | Not specified |
| CNA | Linux | Linux | affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e git | Not specified |
| CNA | Linux | Linux | affected 5.10 | Not specified |
| CNA | Linux | Linux | unaffected 5.10 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.266 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.217 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.184 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.153 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.105 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.46 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.10 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a42932c6aa33d0aac683cacdf1ec7009b955ba5d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1059789ae9f99cbbe3a78e361e9c0976beb5958b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1b4ff94ae7c580c880291519fb0e3e2bd075beef | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a4f182f8715cb0819445f0850cd5436828f4bafc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1acc317d67a755a45e32419a15d70e403fa43f0e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/219c96de5d9b6b4af7e8576ad897b774cc3ee9a7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2d29983104f06f5b0babcd5a25a0f0408272cd27 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.