CVE-2020-26088: canonical ubuntu_linux Incorrect Default Permissions
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-26088DEBIAN-CVE-2020-26088
Published 24-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-26088 is a medium (CVSS 5.5) Incorrect Default Permissions vulnerability in canonical ubuntu_linux. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.9% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.40%
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 18 · Related 16DLA-2385-1DLA-2420-1OPENSUSE-SU-2020:1586-1OPENSUSE-SU-2020:1655-1OPENSUSE-SU-2021:0242-1SUSE-SU-2020:2879-1SUSE-SU-2020:2904-1SUSE-SU-2020:2905-1SUSE-SU-2020:2906-1SUSE-SU-2020:2907-1SUSE-SU-2020:2908-1SUSE-SU-2020:2999-1SUSE-SU-2020:3014-1SUSE-SU-2020:3501-1SUSE-SU-2020:3503-1SUSE-SU-2020:3532-1SUSE-SU-2020:3544-1USN-4578-1
Timeline
- 24-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A missing CAP_NET_RAW check in NFC socket creation in net/nfc/rawsock.c in the Linux kernel before 5.8.2 could be used by local attackers to create raw sockets, bypassing security mechanisms, aka CID-26896f01467a.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
0.00 pp
From 0.40% on 21-09-2026
21-09-202621-10-2026
EPSS score0.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu40 products
- linux< 4.4.0-190.220 | < 4.15.0-121.123 | < 5.4.0-48.52
- linux-aws< 4.4.0-1078.82 | < 4.4.0-1114.127 | < 4.15.0-1086.91 | < 5.4.0-1025.25
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.4< 5.4.0-1025.25~18.04.1
Debian2 products
- linux< 5.7.17-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04
Linux1 product
- linux_kernel< 5.8.2
Opensuse1 product
- leapEOL15.1 | 15.2
5 vendors · 45 products
References
14 links- github.com/torvalds/linux/commit/26896f01467a28651f7a536143fe5ac8449d4041X Refsource MISCREPORTPatchThird Party Advisory
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2X Refsource MISCREPORTPatchRelease NotesVendor Advisory
lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing ListX Refsource MLISTThird Party Advisory
