CVE-2020-6541: debian debian_linux Use After Free
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2020-6541DEBIAN-CVE-2020-6541
Published 21-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-6541 is a high (CVSS 8.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 21.61% chance of exploitation in the next 30 days, higher than 97.6% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
21.61%
0%100%
High · +0.16 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 21-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in WebUSB in Google Chrome prior to 84.0.4147.105 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
21.61%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
+0.16 pp
From 21.45% on 20-09-2026
20-09-202620-10-2026
EPSS score21.61%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian2 products
- chromium< 87.0.4280.88-0.1
- debian_linuxEOL10.0
Fedoraproject1 product
- fedoraEOL33
Google1 product
- chrome≥ unspecified, < 84.0.4147.105 | < 84.0.4147.105
Ubuntu1 product
- chromium-browser< 84.0.4147.105-0ubuntu0.16.04.1 | < 84.0.4147.105-0ubuntu0.18.04.1
4 vendors · 5 products
References
9 links- chromereleases.googleblog.com/2020/07/stable-channel-update-for-desktop_27.htmlX Refsource MISCRelease NotesVendor Advisory
- packetstormsecurity.com/files/159610/Chrome-USB-OnServiceConnectionError-Use-After-Free.htmlX Refsource MISCThird Party AdvisoryVDB Entry
