{"id":"CVE-2021-47336","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-47336","generatedAt":"2026-10-27T19:05:39.759Z","title":"In the Linux kernel, the following vulnerability has been resolved: smackfs: restrict bytes count in smk_set_cipso() Oops, I failed to update subject line.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmackfs: restrict bytes count in smk_set_cipso()\n\nOops, I failed to update subject line.\n\nFrom 07571157c91b98ce1a4aa70967531e64b78e8346 Mon Sep 17 00:00:00 2001\nDate: Mon, 12 Apr 2021 22:25:06 +0900\nSubject: [PATCH] smackfs: restrict bytes count in smk_set_cipso()\n\nCommit 7ef4c19d245f3dc2 (\"smackfs: restrict bytes count in smackfs write\nfunctions\") missed that count > SMK_CIPSOMAX check applies to only\nformat == SMK_FIXED24_FMT case.","published":"2024-05-21T15:15:20.000Z","lastModified":"2026-06-17T04:17:14.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.00246,"percentile":0.15728,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/135122f174c357b7a3e58f40fa5792156c5e93e6","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/258fd821f69378453c071b9dd767b298810fc766","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3780348c1a0e14ffefcaf1fc521f815bcaac94b0","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/49ec114a6e62d8d320037ce71c1aaf9650b3cafd","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f9880403e6b71d56924748ba331daf836243fca","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8f5c773a2871cf446e3f36b2834fb25bbb28512b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cbd87ba6a13891acf6180783f8234a8b7a3e3d4d","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/135122f174c357b7a3e58f40fa5792156c5e93e6","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/258fd821f69378453c071b9dd767b298810fc766","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/3780348c1a0e14ffefcaf1fc521f815bcaac94b0","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/49ec114a6e62d8d320037ce71c1aaf9650b3cafd","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5f9880403e6b71d56924748ba331daf836243fca","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8f5c773a2871cf446e3f36b2834fb25bbb28512b","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/cbd87ba6a13891acf6180783f8234a8b7a3e3d4d","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-47336","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."}