CVE-2011-1770: fedoraproject fedora Integer Underflow (Wrap or Wraparound)

Modified

Published 24-06-2011Last modified 06-08-2024

Vulnerability summary

CVE-2011-1770 is a high (CVSS 7.8) Integer Underflow (Wrap or Wraparound) vulnerability in fedoraproject fedora. EPSS estimates a 4.36% chance of exploitation in the next 30 days, higher than 91.2% of scored vulnerabilities.

Priority

Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v2.0 (NVD)

EPSS score

4.36%

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 3

DSA-2240-1 RHSA-2011:0836 RHSA-2011:1253

Timeline

24-06-2011
PublishedVulnerability first disclosed.
06-08-2024
Last modifiedVulnerability information updated.

Description

Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.

CVSS metrics

2 scores · 1 source · 2 versions

v3.17.5v2.07.8

EPSS trend

Probability

4.36%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.36% 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

CWE-191Integer Underflow (Wrap or Wraparound)The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

Affected systems

Version check

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

Fedoraproject1 product

fedoraEOL14 | 15

Linux1 product

linux_kernel< 2.6.33.14

2 vendors · 2 products

References

10 links

www.securitytracker.com/id?1025592VDB EntryX Refsource SECTRACKThird Party Advisory
marc.info?l=linux-kernel&m=130468845209036&w=2Mailing ListX Refsource MLISTPatchThird Party Advisory
www.securityfocus.com/bid/47769VDB EntryX Refsource BIDThird Party Advisory
marc.info?l=linux-kernel&m=130469305815140&w=2Mailing ListX Refsource MLISTPatchThird Party Advisory
bugzilla.redhat.com/show_bug.cgi?id=703011X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
secunia.com/advisories/44932Third Party AdvisoryX Refsource SECUNIAVendor Advisory
securityreason.com/securityalert/8286Third Party AdvisoryX Refsource SREASON
lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.htmlVendor AdvisoryX Refsource FEDORAThird Party Advisory
www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14X Refsource CONFIRMRelease NotesVendor Advisory
lists.fedoraproject.org/pipermail/package-announce/2011-June/061366.htmlVendor AdvisoryX Refsource FEDORAPatchThird Party Advisory