{"id":"CVE-2025-22037","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-22037","generatedAt":"2026-10-28T03:30:27.452Z","title":"In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference in alloc_preauth_hash()\n\nThe Client send malformed smb2 negotiate request. ksmbd return error\nresponse. Subsequently, the client can send smb2 session setup even\nthought conn->preauth_info is not allocated.\nThis patch add KSMBD_SESS_NEED_SETUP status of connection to ignore\nsession setup request if smb2 negotiate phase is not complete.","published":"2025-04-16T15:15:56.000Z","lastModified":"2026-10-08T00:46:57.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["linux/linux kernel"],"epss":{"score":0.6951,"percentile":0.99359,"date":"2026-10-26","history":[{"date":"2026-09-23","score":0.69566,"percentile":0.99334}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 69.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-08T03:00:08.000Z","detail":{"from":"5.5","score":"7.5","severity":"HIGH","fromSeverity":"MEDIUM"},"summary":"Now scored CVSS 7.5 HIGH (was 5.5)."}],"references":[{"url":"https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-25-310/","tags":["Third Party Advisory"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-22037","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}