CVE-2021-38207: linux linux_kernel Classic Buffer Overflow
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-38207DEBIAN-CVE-2021-38207
Published 08-08-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-38207 is a high (CVSS 7.5) Classic Buffer Overflow vulnerability in linux linux_kernel. EPSS estimates a 3.35% chance of exploitation in the next 30 days, higher than 88.6% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
3.35%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 11Timeline
- 08-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
drivers/net/ethernet/xilinx/ll_temac_main.c in the Linux kernel before 5.12.13 allows remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
3.35%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
0.00 pp
From 3.35% on 21-09-2026
21-09-202621-10-2026
EPSS score3.35%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu53 products
- linux< 5.4.0-81.91
- linux-aws< 5.4.0-1055.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11< 5.11.0-1017.18~20.04.1
- linux-aws-5.3All versions (No fix recorded)
Debian1 product
- linux< 5.10.46-1
Linux1 product
- linux_kernel< 5.12.13
3 vendors · 55 products
References
9 links- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13X Refsource MISCREPORTMailing ListPatchVendor Advisory
- github.com/torvalds/linux/commit/c364df2489b8ef2f5e3159b1dff1ff1fdb16040dX Refsource MISCREPORTPatchThird Party Advisory
