Security Fixes and Rewards
Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.
This update includes 19 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.
[$20000][1246631] High CVE-2021-37981 : Heap buffer overflow in Skia. Reported by Yangkang (@dnpushme) of 360 ATA on 2021-09-04
[$10000][1248661] High CVE-2021-37982 : Use after free in Incognito. Reported by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi'anxin Group on 2021-09-11
[$10000][1249810] High CVE-2021-37983 : Use after free in Dev Tools. Reported by Zhihua Yao of KunLun Lab on 2021-09-15
[$7500][1253399] High CVE-2021-37984 : Heap buffer overflow in PDFium. Reported by Antti Levomäki, Joonas Pihlaja and Christian Jalio from Forcepoint on 2021-09-27
[$5000][1241860] High CVE-2021-37985 : Use after free in V8. Reported by Yangkang (@dnpushme) of 360 ATA on 2021-08-20
[$6000][1242404] Medium CVE-2021-37986 : Heap buffer overflow in Settings. Reported by raven (@raid_akame) on 2021-08-23
[$5000][1206928] Medium CVE-2021-37987 : Use after free in Network APIs. Reported by Yangkang (@dnpushme) of 360 ATA on 2021-05-08
[$5000][1228248] Medium CVE-2021-37988 : Use after free in Profiles. Reported by raven (@raid_akame) on 2021-07-12
[$2000][1233067] Medium CVE-2021-37989 : Inappropriate implementation in Blink. Reported by Matt Dyas, Ankur Sundara on 2021-07-26
[$N/A][1247395] Medium CVE-2021-37990 : Inappropriate implementation in WebView. Reported by Kareem Selim of CyShield on 2021-09-07
[$TBD][1250660] Medium CVE-2021-37991 : Race in V8. Reported by Samuel Groß of Google Project Zero on 2021-09-17
[$TBD][1253746] Medium CVE-2021-37992 : Out of bounds read in WebAudio. Reported by sunburst@Ant Security Light-Year Lab on 2021-09-28
[$TBD][1255332] Medium CVE-2021-37993 : Use after free in PDF Accessibility. Reported by Cassidy Kim of Amber Security Lab, OPPO Mobile Telecommunications Corp. Ltd. on 2021-10-02
[$TBD][1243020] Medium CVE-2021-37996 : Insufficient validation of untrusted input in Downloads. Reported by Anonymous on 2021-08-24
[$3000][1100761] Low CVE-2021-37994 : Inappropriate implementation in iFrame Sandbox. Reported by David Erceg on 2020-06-30
[$1000][1242315] Low CVE-2021-37995 : Inappropriate implementation in WebApp Installer. Reported by Terence Eden on 2021-08-23
We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.
As usual, our ongoing internal security work was responsible for a wide range of fixes:
Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.
