CVE-2026-80756selinux: do not cancel a policy conversion that never started
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before 2d29983104f06f5b0babcd5a25a0f0408272cd27; from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before a4f182f8715cb0819445f0850cd5436828f4bafc; from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before 1059789ae9f99cbbe3a78e361e9c0976beb5958b; 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 builds before 1acc317d67a755a45e32419a15d70e403fa43f0e; from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before a42932c6aa33d0aac683cacdf1ec7009b955ba5d; 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 builds before 1b4ff94ae7c580c880291519fb0e3e2bd075beef; from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7; from 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 before e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e | CNA record |
References
- https://git.kernel.org/stable/c/2d29983104f06f5b0babcd5a25a0f0408272cd27
- https://git.kernel.org/stable/c/a4f182f8715cb0819445f0850cd5436828f4bafc
- https://git.kernel.org/stable/c/1059789ae9f99cbbe3a78e361e9c0976beb5958b
- https://git.kernel.org/stable/c/1acc317d67a755a45e32419a15d70e403fa43f0e
- https://git.kernel.org/stable/c/a42932c6aa33d0aac683cacdf1ec7009b955ba5d
- https://git.kernel.org/stable/c/1b4ff94ae7c580c880291519fb0e3e2bd075beef
- https://git.kernel.org/stable/c/219c96de5d9b6b4af7e8576ad897b774cc3ee9a7
- https://git.kernel.org/stable/c/e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.