7.1

CVE-2012-2100: linux linux_kernel Numeric Errors

Modified
AliasesRHSA-2012:1445UBUNTU-CVE-2012-2100
Published 03-07-2012Last modified 06-08-2024

Vulnerability summary

CVE-2012-2100 is a high (CVSS 7.1) Numeric Errors vulnerability in linux linux_kernel. EPSS estimates a 2.70% chance of exploitation in the next 30 days, higher than 85.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v2.0 (NVD)
EPSS score
2.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2012:1580

Timeline

  1. 03-07-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.70%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.70% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Redhat18 products
  • kernel< 0:2.6.18-308.20.1.el5
  • kernel-debug< 0:2.6.18-308.20.1.el5
  • kernel-debug-debuginfo< 0:2.6.18-308.20.1.el5
  • kernel-debug-devel< 0:2.6.18-308.20.1.el5
  • kernel-debuginfo< 0:2.6.18-308.20.1.el5
Ubuntu14 products
  • linux< 3.11.0-12.19 | < 4.2.0-16.19
  • linux-aws< 4.4.0-1002.2 | < 4.4.0-1001.10
  • linux-flo< 3.4.0-1.3 | < 3.4.0-5.22
  • linux-gke< 4.4.0-1003.3
  • linux-goldfish< 3.4.0-1.9 | < 3.4.0-4.27
Linux1 product

3 vendors · 33 products

References

26 links
Show all 26 references