{"id":"CVE-2021-27097","details":"The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.","modified":"2026-04-11T13:54:03.145075Z","published":"2021-02-17T23:15:13.653Z","references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/09/msg00037.html"},{"type":"FIX","url":"https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01"},{"type":"FIX","url":"https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b"},{"type":"FIX","url":"https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/u-boot/u-boot","events":[{"introduced":"0"},{"last_affected":"c4fddedc48f336eabc4ce3f74940e6aa372de18c"},{"introduced":"0"},{"last_affected":"1aa9c3b9308763f9b1d3e31a02276baf98245945"},{"fixed":"6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01"},{"fixed":"8a7d4cf9820ea16fabd25a6379351b4dc291204b"},{"fixed":"b6f4c757959f8850e1299a77c8e5713da78e8ec0"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2021.01"},{"introduced":"0"},{"last_affected":"2021.04-rc1"}]}}],"versions":["LABEL_2002_11_05_0120","LABEL_2002_11_05_1735","LABEL_2002_11_10_2310","LABEL_2002_11_11_2211","LABEL_2002_11_18_0115","LABEL_2002_11_22_0015","LABEL_2002_12_03_2230","LABEL_2002_12_07_0120","LABEL_2002_12_21_0040","LABEL_2002_12_28_1700","LABEL_2003_01_11_1050","LABEL_2003_01_14_0055","LABEL_2003_02_28_0150","LABEL_2003_03_06_0050","LABEL_2003_03_06_0200","LABEL_2003_03_06_1440","LABEL_2003_03_06_2255","LABEL_2003_03_14_2150","LABEL_2003_03_25_1830","LABEL_2003_03_26_1300","LABEL_2003_03_27_1900","LABEL_2003_04_05_0300","LABEL_2003_04_15_1900","LABEL_2003_05_03_1700","LABEL_2003_05_12_2355","LABEL_2003_05_20_1630","LABEL_2003_05_20_2250","LABEL_2003_05_22_2230","LABEL_2003_05_23_0055","LABEL_2003_05_23_1450","LABEL_2003_05_30_1450","LABEL_2003_05_31_2115","LABEL_2003_06_04_0200","LABEL_2003_06_05_2140","LABEL_2003_06_16_0055","LABEL_2003_06_22_1530","LABEL_2003_06_26_2220","LABEL_2003_06_27_2340","LABEL_2003_06_29_0145","LABEL_2003_09_06_0055","LABEL_2003_09_12_0110","LABEL_2003_09_12_1745","LABEL_2003_09_13_2100","LABEL_2003_09_16_2310","LABEL_2003_09_18_2045","LABEL_2003_10_01_1830","LABEL_2003_10_06_2355","LABEL_2003_10_09_1515","LABEL_2003_10_09_2320","LABEL_2003_10_10_1200","LABEL_2003_10_14_2140","LABEL_2003_10_16_0200","LABEL_2003_10_20_0025","LABEL_2003_11_26_MKR","LABEL_2003_12_06_1550","LABEL_2004_01_21_2110","LABEL_2004_01_29_1030","LABEL_2004_02_11_2240","LABEL_2004_02_20_2310","LABEL_2004_02_24_0305","LABEL_2004_03_12_0130","LABEL_2004_03_14_2340","LABEL_2004_03_16_2330","LABEL_2004_03_25_1630","LABEL_2004_04_18_2135","LABEL_2004_04_23_2240","LABEL_2004_05_19_2335","LABEL_2004_05_29_1850","LABEL_2004_06_24_1800","LABEL_2004_07_01_1200","LABEL_2004_08_28_2355","LABEL_2004_08_29_0045","LABEL_2004_09_09_0000","LABEL_2004_10_12_0110","LABEL_2004_10_20_0020","LABEL_2004_11_17_2222","LABEL_2004_11_25_0035","LABEL_2004_12_18_2335","LABEL_2004_12_19_1100","LABEL_2004_12_19_2240","LABEL_2004_12_20_1220","LABEL_2005_01_31_2245","LABEL_2005_02_07_2045","LABEL_2005_02_08_1615","LABEL_2005_02_28_0050","LABEL_2005_03_06_0225","LABEL_2005_03_15_0125","LABEL_2005_04_05_1830","LABEL_2005_04_05_2345","LABEL_2005_04_14_0115","LABEL_2005_05_05_1920","LABEL_2005_05_09_1245","LABEL_2005_05_13_0050","LABEL_2005_07_04_0202","LABEL_2005_09_15_2320","LABEL_2006_04_18_1106","LABEL_2006_05_10_1800","LABEL_2006_05_19_1133","LABEL_2006_06_30_2020","U-Boot-0_2_0","U-Boot-0_3_0","U-Boot-0_3_1","U-Boot-0_4_0","U-Boot-0_4_1","U-Boot-0_4_2","U-Boot-0_4_3","U-Boot-0_4_4","U-Boot-0_4_5","U-Boot-0_4_6","U-Boot-0_4_7","U-Boot-0_4_8","U-Boot-1_0_0","U-Boot-1_0_1","U-Boot-1_0_2","U-Boot-1_1_0","U-Boot-1_1_1","U-Boot-1_1_2","U-Boot-1_1_3","U-Boot-1_1_4","U-Boot-1_1_6","U-Boot-1_2_0","v1.3.1","v1.3.1-rc1","v1.3.2","v1.3.2-rc2","v1.3.2-rc3","v1.3.3","v1.3.3-rc1","v1.3.3-rc2","v1.3.3-rc3","v2008.10-rc2","v2009.01","v2009.01-rc1","v2009.01-rc2","v2009.01-rc3","v2009.03","v2009.03-rc1","v2009.03-rc2","v2009.06","v2009.06-rc1","v2009.06-rc2","v2009.06-rc3","v2009.08","v2009.08-rc1","v2009.08-rc2","v2009.08-rc3","v2009.11","v2009.11-rc1","v2009.11-rc2","v2010.03","v2010.03-rc1","v2010.03-rc2","v2010.03-rc3","v2010.06-rc1","v2010.06-rc2","v2010.09","v2010.09-rc1","v2010.12","v2010.12-rc1","v2010.12-rc2","v2010.12-rc3","v2011.03","v2011.03-rc1","v2011.03-rc2","v2011.06","v2011.06-rc1","v2011.06-rc2","v2011.06-rc3","v2011.09","v2011.09-rc1","v2011.09-rc2","v2011.12","v2011.12-rc1","v2011.12-rc2","v2011.12-rc3","v2012.04","v2012.04-rc1","v2012.04-rc2","v2012.04-rc3","v2012.04.01","v2012.07","v2012.07-rc1","v2012.07-rc2","v2012.07-rc3","v2012.10","v2012.10-rc1","v2012.10-rc2","v2012.10-rc3","v2013.01","v2013.01-rc1","v2013.01-rc2","v2013.01-rc3","v2013.04","v2013.04-rc1","v2013.04-rc2","v2013.04-rc3","v2013.07","v2013.07-rc1","v2013.07-rc2","v2013.07-rc3","v2013.10","v2013.10-rc1","v2013.10-rc2","v2013.10-rc3","v2013.10-rc4","v2014.01-rc1","v2014.04","v2014.07","v2014.07-rc1","v2014.07-rc2","v2014.07-rc3","v2014.07-rc4","v2014.10","v2014.10-rc1","v2014.10-rc2","v2014.10-rc3","v2015.01","v2015.01-rc1","v2015.01-rc2","v2015.01-rc3","v2015.01-rc4","v2015.04","v2015.04-rc1","v2015.04-rc2","v2015.04-rc3","v2015.04-rc4","v2015.04-rc5","v2015.07","v2015.07-rc1","v2015.07-rc2","v2015.07-rc3","v2015.10","v2015.10-rc1","v2015.10-rc2","v2015.10-rc3","v2015.10-rc4","v2015.10-rc5","v2016.01","v2016.01-rc1","v2016.01-rc2","v2016.01-rc3","v2016.01-rc4","v2016.03","v2016.03-rc1","v2016.03-rc2","v2016.03-rc3","v2016.05","v2016.05-rc1","v2016.05-rc2","v2016.05-rc3","v2016.07","v2016.07-rc1","v2016.07-rc2","v2016.07-rc3","v2016.09","v2016.09-rc1","v2016.09-rc2","v2016.11","v2016.11-rc1","v2016.11-rc2","v2016.11-rc3","v2017.01","v2017.01-rc1","v2017.01-rc2","v2017.01-rc3","v2017.03","v2017.03-rc1","v2017.03-rc2","v2017.03-rc3","v2017.05","v2017.05-rc1","v2017.05-rc2","v2017.05-rc3","v2017.07","v2017.07-rc1","v2017.07-rc2","v2017.07-rc3","v2017.09","v2017.09-rc1","v2017.09-rc2","v2017.09-rc3","v2017.09-rc4","v2017.11","v2017.11-rc1","v2017.11-rc2","v2017.11-rc3","v2017.11-rc4","v2018.01","v2018.01-rc1","v2018.01-rc2","v2018.01-rc3","v2018.03","v2018.03-rc1","v2018.03-rc2","v2018.03-rc3","v2018.03-rc4","v2018.05","v2018.05-rc1","v2018.05-rc2","v2018.05-rc3","v2018.07","v2018.07-rc1","v2018.07-rc2","v2018.07-rc3","v2018.09","v2018.09-rc1","v2018.09-rc2","v2018.09-rc3","v2018.11","v2018.11-rc1","v2018.11-rc2","v2018.11-rc3","v2019.01","v2019.01-rc1","v2019.01-rc2","v2019.01-rc3","v2019.04","v2019.04-rc1","v2019.04-rc2","v2019.04-rc3","v2019.04-rc4","v2019.07","v2019.07-rc1","v2019.07-rc2","v2019.07-rc3","v2019.07-rc4","v2019.10","v2019.10-rc1","v2019.10-rc2","v2019.10-rc3","v2019.10-rc4","v2020.01","v2020.01-rc1","v2020.01-rc2","v2020.01-rc3","v2020.01-rc4","v2020.01-rc5","v2020.04","v2020.04-rc1","v2020.04-rc2","v2020.04-rc3","v2020.04-rc4","v2020.04-rc5","v2020.07","v2020.07-rc1","v2020.07-rc2","v2020.07-rc3","v2020.07-rc4","v2020.07-rc5","v2020.10","v2020.10-rc1","v2020.10-rc2","v2020.10-rc3","v2020.10-rc4","v2020.10-rc5","v2021.01","v2021.01-rc1","v2021.01-rc2","v2021.01-rc3","v2021.01-rc4","v2021.01-rc5","v2021.04-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27097.json","vanir_signatures":[{"source":"https://github.com/u-boot/u-boot/commit/8a7d4cf9820ea16fabd25a6379351b4dc291204b","target":{"file":"common/fdt_region.c"},"signature_type":"Line","signature_version":"v1","deprecated":false,"id":"CVE-2021-27097-0788cbba","digest":{"line_hashes":["131167673951113098808426803882902172172","297642031306219908615520255713678809782","13038855567295276379856237084832402341","215052532392324428463764905164833473622","174180830915547768706808818569342461272","95750898512139293376167359105850453262","277661360281428578522012236020384945835","171438998963056465344946206450277690716","95026624332702259831985095751899192650","125029177911778340456701752955704858336","230661370888417706017265946634266852780","176848285700228865888710769027645112657","208154641509916212661166130962351114133","106279679589828881283325069327557310930","207596728388394743886983235229208090854"],"threshold":0.9}},{"source":"https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01","target":{"file":"common/image-fit.c","function":"fit_check_format"},"signature_type":"Function","signature_version":"v1","deprecated":false,"id":"CVE-2021-27097-16810ab5","digest":{"length":645,"function_hash":"328206252406538130281694790924571946016"}},{"source":"https://github.com/u-boot/u-boot/commit/6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01","target":{"file":"common/image-fit.c"},"signature_type":"Line","signature_version":"v1","deprecated":false,"id":"CVE-2021-27097-498e9bf0","digest":{"line_hashes":["161395484950891869238591966796393850803","321892507972849290423788447486456961000","289588865331221651052607348083335618340"],"threshold":0.9}}],"vanir_signatures_modified":"2026-04-11T13:54:03Z"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}