CVE-2018-7757: linux linux_kernel
CVSS: 5.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-7757DEBIAN-CVE-2018-7757
Published 08-03-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-7757 is a medium (CVSS 5.5) vulnerability in linux linux_kernel. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.5% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.0 (NVD)EPSS score
0.53%
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 21 · Related 15DLA-1369-1DSA-4187-1DSA-4188-1RHSA-2018:2948RHSA-2018:3083RHSA-2018:3096SUSE-SU-2018:1080-1SUSE-SU-2018:1172-1SUSE-SU-2018:1220-1SUSE-SU-2018:1221-1SUSE-SU-2018:1309-1SUSE-SU-2018:3003-1SUSE-SU-2018:3004-1SUSE-SU-2018:3084-1SUSE-SU-2018:3659-1SUSE-SU-2019:0095-1USN-3654-1USN-3654-2USN-3656-1USN-3697-2USN-3698-1
Timeline
- 08-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.53%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
0.00 pp
From 0.53% on 19-09-2026
19-09-202619-10-2026
EPSS score0.53%
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< 3.13.0-153.203 | < 4.4.0-127.153
- linux-aws< 4.4.0-1022.22 | < 4.4.0-1060.69
- linux-azure< 4.15.0-1013.13~16.04.2
- linux-azure-fdeAll versions (No fix recorded)
- linux-fips< 4.4.0-1008.10
Debian1 product
- linux< 4.15.17-1
Linux1 product
- linux_kernel≤ 4.15.7
3 vendors · 19 products
References
26 links
- github.com/torvalds/linux/commit/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4X Refsource MISCPatchThird Party Advisory