CVE-2016-6354: debian debian_linux
CVSS: 9.8v3.0CriticalModified
AliasesALPINE-CVE-2016-6354MGASA-2016-0396UBUNTU-CVE-2016-6354DEBIAN-CVE-2016-6354DSA-3653-1DSA-3653-2
Published 21-09-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-6354 is a critical (CVSS 9.8) vulnerability in debian debian_linux. EPSS estimates a 9.12% chance of exploitation in the next 30 days, higher than 95.2% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
9.12%
0%100%
Low · +0.35 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 10 · Related 10Timeline
- 21-09-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
CVSS metrics
5 scores · 4 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
9.12%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+0.35 pp
From 8.77% on 18-09-2026
18-09-202618-10-2026
EPSS score9.12%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- flex< 2.6.1-1 | < 2.5.39-8+deb8u1 | < 2.5.39-8+deb8u2
- debian_linuxEOL8.0
Alpine1 product
- flex< 2.5.39-r1 | < 2.5.39-r3 | < 2.6.1-r0
Mageia1 product
- flex< 2.5.39-3.1.mga5
Ubuntu1 product
- flexAll versions (No fix recorded)
Westes1 product
- flex≤ 2.6.0
5 vendors · 6 products
References
13 links- www.openwall.com/lists/oss-security/2016/07/18/8Mailing ListX Refsource MLISTRelease NotesThird Party Advisory
- www.openwall.com/lists/oss-security/2016/07/26/12Mailing ListX Refsource MLISTRelease NotesThird Party Advisory
