CVE-2018-6555: canonical ubuntu_linux Use After Free
CVSS: 7.8v3.0HighModified
AliasesUBUNTU-CVE-2018-6555DEBIAN-CVE-2018-6555
Published 04-09-2018Last modified 16-09-2024
Vulnerability summary
CVE-2018-6555 is a high (CVSS 7.8) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.2% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.0 (NVD)EPSS score
0.50%
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 26 · Related 20DLA-1529-1DLA-1531-1DSA-4308-1MGASA-2018-0373MGASA-2018-0374MGASA-2018-0419SUSE-SU-2018:2775-1SUSE-SU-2018:2776-1SUSE-SU-2018:2858-1SUSE-SU-2018:2862-1SUSE-SU-2018:2879-1SUSE-SU-2018:2907-1SUSE-SU-2018:2908-1SUSE-SU-2018:2908-2SUSE-SU-2018:2980-1SUSE-SU-2018:2981-1SUSE-SU-2018:3083-1SUSE-SU-2018:3084-1SUSE-SU-2018:3088-1SUSE-SU-2018:3961-1USN-3775-1USN-3776-1USN-3776-2USN-3777-1USN-3777-2USN-3777-3
Timeline
- 04-09-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.50%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
0.00 pp
From 0.50% on 18-09-2026
18-09-202618-10-2026
EPSS score0.50%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu17 products
- linux< 3.13.0-160.210 | < 4.4.0-137.163 | < 4.15.0-36.39
- linux-aws< 4.4.0-1031.34 | < 4.4.0-1069.79 | < 4.15.0-1023.23
- linux-azure< 4.15.0-1031.32~14.04.1 | < 4.15.0-1025.26~16.04.1 | < 4.15.0-1025.26
- linux-azure-fdeAll versions (No fix recorded)
- linux-fips< 4.4.0-1008.10
Debian2 products
- linux< 4.17.3-1
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Linux1 product
- linux_kernel< 4.17
Linux kernel1 product
- linux kernel< 4.17
5 vendors · 22 products
References
22 links
lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing ListX Refsource MLISTThird Party Advisory