CVE-2023-0210: linux linux_kernel Heap-based Buffer Overflow
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-0210DEBIAN-CVE-2023-0210
Published 27-03-2023Last modified 19-02-2025
Vulnerability summary
CVE-2023-0210 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in linux linux_kernel. EPSS estimates a 71.74% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
71.74%
0%100%
Critical · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference
Advisory lineage
Upstream 0 · Downstream 8 · Related 6Timeline
- 27-03-2023PublishedVulnerability first disclosed.
- 19-02-2025Last modifiedVulnerability information updated.
Description
A bug affects the Linux kernel’s ksmbd NTLMv2 authentication and is known to crash the OS immediately in Linux-based systems.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 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
EPSS trend
Probability
71.74%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 71.74% on 21-09-2026
21-09-202621-10-2026
EPSS score71.74%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (openwall.com)
Maturity: unknown
Exploit Reference (securityonline.info)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Ubuntu71 products
- linux< 5.15.0-69.76
- linux-aws< 5.15.0-1033.37
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
Debian1 product
- linux< 6.1.7-1
Linux1 product
- linux_kernel≥ 5.15, < 5.15.87 | ≥ 5.16, < 6.0.19 | ≥ 6.1, < 6.1.5
3 vendors · 73 products
References
18 links- securityonline.info/cve-2023-0210-flaw-in-linux-kernel-allows-unauthenticated-remote-dos-attacks/ExploitThird Party Advisory
- security.netapp.com/advisory/ntap-20230517-0002/Third Party Advisory
