CVE-2026-23091

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"416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/95fc36a234da24bbc5f476f8104a5a15f99ed3e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af4b9467296b9a16ebc008147238070236982b6d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b71e64ef7ff9443835d1333e3e80ab1e49e5209f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf7785434b5d05d940d936b78925080950bd54dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9b059bda4276f2bb72cb98ec7875a747f042ea2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: intel_th: fix device leak on output open()", "id": "2436786", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436786"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2026-23091", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23091\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23091\nhttps://lore.kernel.org/linux-cve-announce/2026020425-CVE-2026-23091-4580@gregkh/T"]}

{"analysis": {"en": {"generated_at": "2026-04-18T18:27:45.612871+00:00", "value": {"mitigation_remediation": ["Upgrade the Linux kernel to a version that includes the patch for CVE-2026-23091, such as the current stable 6.19 releases or newer.", "If a kernel upgrade is not feasible, blacklist the Intel thermal management driver by adding a line \"blacklist intel_th\" to a file in /etc/modprobe.d/ and unload it with `modprobe -r intel_th` to prevent open operations.", "Reboot the system after disabling the driver to ensure the changes take effect and the driver remains unloaded."], "summary": {"action": "Patch", "impact": "Denial of Service via memory exhaustion"}, "threat_synthesis": {"affected_systems": "Linux kernel versions before the fix in the 6.19 series, particularly early release candidates of 6.19, are impacted. Vendors that include the Intel thermal management driver in their kernel build are affected. The precise version range is not enumerated beyond the 6.19 release series, but any kernel prior to the commit that addresses the leak qualifies.", "description_and_impact": "The flaw causes a lingering reference to an Intel thermal management device after the device is opened successfully. This results in a memory leak that can gradually consume kernel memory and degrade system performance or cause a reboot. The vulnerability presents no direct privilege escalation or remote code execution risk, but an attacker local to the system could trigger the leak repeatedly to exhaust resources. The weakness is identified as a memory leak.", "risk_and_exploitability": "The CVSS score of 5.5 indicates a moderate impact. The EPSS score is below 1%, suggesting a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires local access to the kernel and the ability to open the Intel thermal management device repeatedly; no remote attack vector is apparent. The risk is primarily to availability rather than confidentiality or integrity."}}}}, "created": "2026-04-18T18:30:07.292797+00:00", "updated": "2026-04-18T18:30:07.292807+00:00", "vendors": []}