CVE-2026-80756None▾ SunlitIn 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 derefe…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < 2d29983104f06f5b0babcd5a25a0f0408272cd27Linux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < a4f182f8715cb0819445f0850cd5436828f4bafcLinux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < 1059789ae9f99cbbe3a78e361e9c0976beb5958bLinux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < 1acc317d67a755a45e32419a15d70e403fa43f0eLinux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < a42932c6aa33d0aac683cacdf1ec7009b955ba5dLinux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < 1b4ff94ae7c580c880291519fb0e3e2bd075beefLinux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7Linux >= 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 < e5c0235a3c4e9eb047a16cd02323fe4ecf2f570eLinux 5.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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