{"id":"CVE-2021-30311","aliases":["EUVD-2021-17242","GHSA-c5j7-636j-xr7g"],"status":"published","title":"Possible heap overflow due to lack of index validation before allocating and writing to heap...","description":"Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00162,"percentile":0.05461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-129","CWE-20"],"published":"2022-01-13T11:40:28Z","modified":"2026-06-17T03:50:07Z","products":[{"vendor":"qualcomm","product":"ar8035_firmware"},{"vendor":"qualcomm","product":"qca6390_firmware"},{"vendor":"qualcomm","product":"qca6391_firmware"},{"vendor":"qualcomm","product":"qca6426_firmware"},{"vendor":"qualcomm","product":"qca6436_firmware"},{"vendor":"qualcomm","product":"qca6574a_firmware"},{"vendor":"qualcomm","product":"qca6574au_firmware"},{"vendor":"qualcomm","product":"qca6595au_firmware"},{"vendor":"qualcomm","product":"qca6696_firmware"},{"vendor":"qualcomm","product":"qca8081_firmware"},{"vendor":"qualcomm","product":"qca8337_firmware"},{"vendor":"qualcomm","product":"qcm6490_firmware"},{"vendor":"qualcomm","product":"qcs6490_firmware"},{"vendor":"qualcomm","product":"qcx315_firmware"},{"vendor":"qualcomm","product":"sa515m_firmware"},{"vendor":"qualcomm","product":"sd460_firmware"},{"vendor":"qualcomm","product":"sd480_firmware"},{"vendor":"qualcomm","product":"sd662_firmware"},{"vendor":"qualcomm","product":"sd665_firmware"},{"vendor":"qualcomm","product":"sd675_firmware"},{"vendor":"qualcomm","product":"sd678_firmware"},{"vendor":"qualcomm","product":"sd690_5g_firmware"},{"vendor":"qualcomm","product":"sd720g_firmware"},{"vendor":"qualcomm","product":"sd730_firmware"},{"vendor":"qualcomm","product":"sd750g_firmware"},{"vendor":"qualcomm","product":"sd765_firmware"},{"vendor":"qualcomm","product":"sd765g_firmware"},{"vendor":"qualcomm","product":"sd768g_firmware"},{"vendor":"qualcomm","product":"sd778g_firmware"},{"vendor":"qualcomm","product":"sd780g_firmware"},{"vendor":"qualcomm","product":"sd865_5g_firmware"},{"vendor":"qualcomm","product":"sd870_firmware"},{"vendor":"qualcomm","product":"sd888_5g_firmware"},{"vendor":"qualcomm","product":"sd888_firmware"},{"vendor":"qualcomm","product":"sd_675_firmware"},{"vendor":"qualcomm","product":"sd_8_gen1_5g_firmware"},{"vendor":"qualcomm","product":"sdx55_firmware"},{"vendor":"qualcomm","product":"sdx55m_firmware"},{"vendor":"qualcomm","product":"sdx65_firmware"},{"vendor":"qualcomm","product":"sdxr2_5g_firmware"},{"vendor":"qualcomm","product":"sm6225_firmware"},{"vendor":"qualcomm","product":"sm6250_firmware"},{"vendor":"qualcomm","product":"sm6375_firmware"},{"vendor":"qualcomm","product":"sm7250p_firmware"},{"vendor":"qualcomm","product":"sm7315_firmware"},{"vendor":"qualcomm","product":"sm7325p_firmware"},{"vendor":"qualcomm","product":"wcd9341_firmware"},{"vendor":"qualcomm","product":"wcd9360_firmware"},{"vendor":"qualcomm","product":"wcd9370_firmware"},{"vendor":"qualcomm","product":"wcd9375_firmware"},{"vendor":"qualcomm","product":"wcd9380_firmware"},{"vendor":"qualcomm","product":"wcd9385_firmware"},{"vendor":"qualcomm","product":"wcn3950_firmware"},{"vendor":"qualcomm","product":"wcn3980_firmware"},{"vendor":"qualcomm","product":"wcn3988_firmware"},{"vendor":"qualcomm","product":"wcn3991_firmware"},{"vendor":"qualcomm","product":"wcn3998_firmware"},{"vendor":"qualcomm","product":"wcn6740_firmware"},{"vendor":"qualcomm","product":"wcn6750_firmware"},{"vendor":"qualcomm","product":"wcn6850_firmware"},{"vendor":"qualcomm","product":"wcn6851_firmware"},{"vendor":"qualcomm","product":"wcn6855_firmware"},{"vendor":"qualcomm","product":"wcn6856_firmware"},{"vendor":"qualcomm","product":"wsa8810_firmware"},{"vendor":"qualcomm","product":"wsa8815_firmware"},{"vendor":"qualcomm","product":"wsa8830_firmware"},{"vendor":"qualcomm","product":"wsa8835_firmware"},{"vendor":"qualcomm, inc.","product":"snapdragon auto, snapdragon compute, snapdragon connectivity, snapdragon industrial iot, snapdragon mobile"}],"references":[{"url":"https://www.qualcomm.com/company/product-security/bulletins/january-2022-bulletin","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30311"},{"url":"https://github.com/advisories/GHSA-c5j7-636j-xr7g"}],"sources":{"cve":[{"id":"CVE-2021-30311","description":"Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile","status":"published","published":"2022-01-13T11:40:28Z","modified":"2024-08-03T22:32:40.479Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2021-17242","description":"Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile","status":"published","published":"2022-01-13T11:40:28Z","modified":"2024-08-03T22:32:40Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:24:42.48986Z"}],"ghsa":[{"id":"GHSA-c5j7-636j-xr7g","title":"Possible heap overflow due to lack of index validation before allocating and writing to heap...","description":"Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile","status":"published","published":"2022-01-14T00:02:22Z","modified":"2023-04-27T05:10:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:54:33.975596Z"}],"nvd":[{"id":"CVE-2021-30311","description":"Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile","status":"published","published":"2022-01-13T12:15:08.407Z","modified":"2026-06-17T03:50:07.2Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T14:07:03.418194Z"}]}}