CVE & CISA-KEV CatalogNVD
CVE-2019-19448
HIGHEPSS 80th pctl7.8
CVSS v3
Description
In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
How to fix
Remediation Available
linuxDebian
Fixed in:5.7.17-1CVE-2019-19448
Fixed in:5.7.17-1CVE-2019-19448
Fixed in:5.7.17-1CVE-2019-19448
Fixed in:5.7.17-1CVE-2019-19448
linuxUbuntu
Fixed in:4.15.0-121.123USN-4578-1
linux-awsUbuntu
Fixed in:4.15.0-1086.91USN-4578-1
linux-aws-hweUbuntu
Fixed in:4.15.0-1085.90~16.04.1USN-4578-1
linux-azureUbuntu
Fixed in:4.15.0-1098.109~14.04.1USN-4578-1
Fixed in:4.15.0-1098.109~16.04.1USN-4578-1
linux-azure-4.15Ubuntu
Fixed in:4.15.0-1099.110USN-4578-1
linux-gcpUbuntu
Fixed in:4.15.0-1086.98~16.04.1USN-4578-1
linux-gcp-4.15Ubuntu
Fixed in:4.15.0-1086.98USN-4578-1
linux-gke-4.15Ubuntu
Fixed in:4.15.0-1072.76USN-4578-1
linux-hweUbuntu
Fixed in:4.15.0-120.122~16.04.1USN-4578-1
linux-image-4.15.0-1056-oracleUbuntu
Fixed in:4.15.0-1056.61~16.04.1USN-4578-1
linux-image-4.15.0-1057-oracleUbuntu
Fixed in:4.15.0-1057.62USN-4578-1
linux-image-4.15.0-1072-gkeUbuntu
Fixed in:4.15.0-1072.76USN-4578-1
linux-image-4.15.0-1073-raspi2Ubuntu
Fixed in:4.15.0-1073.78USN-4578-1
linux-image-4.15.0-1077-kvmUbuntu
Fixed in:4.15.0-1077.79USN-4578-1
linux-image-4.15.0-1085-awsUbuntu
Fixed in:4.15.0-1085.90~16.04.1USN-4578-1
linux-image-4.15.0-1086-awsUbuntu
Fixed in:4.15.0-1086.91USN-4578-1
linux-image-4.15.0-1086-gcpUbuntu
Fixed in:4.15.0-1086.98~16.04.1USN-4578-1
Fixed in:4.15.0-1086.98USN-4578-1
linux-image-4.15.0-1089-snapdragonUbuntu
Fixed in:4.15.0-1089.98USN-4578-1
linux-image-4.15.0-1098-azureUbuntu
Fixed in:4.15.0-1098.109~14.04.1USN-4578-1
Fixed in:4.15.0-1098.109~16.04.1USN-4578-1
linux-image-4.15.0-1099-azureUbuntu
Fixed in:4.15.0-1099.110USN-4578-1
linux-image-4.15.0-1099-oemUbuntu
Fixed in:4.15.0-1099.109USN-4578-1
linux-image-4.15.0-120-genericUbuntu
Fixed in:4.15.0-120.122~16.04.1USN-4578-1
linux-image-4.15.0-120-generic-lpaeUbuntu
Fixed in:4.15.0-120.122~16.04.1USN-4578-1
linux-image-4.15.0-120-lowlatencyUbuntu
Fixed in:4.15.0-120.122~16.04.1USN-4578-1
linux-image-4.15.0-121-genericUbuntu
Fixed in:4.15.0-121.123USN-4578-1
linux-image-4.15.0-121-generic-lpaeUbuntu
Fixed in:4.15.0-121.123USN-4578-1
linux-image-4.15.0-121-lowlatencyUbuntu
Fixed in:4.15.0-121.123USN-4578-1
linux-image-aws-hweUbuntu
Fixed in:4.15.0.1085.81USN-4578-1
linux-image-aws-lts-18.04Ubuntu
Fixed in:4.15.0.1086.88USN-4578-1
linux-image-azureUbuntu
Fixed in:4.15.0.1098.74USN-4578-1
Fixed in:4.15.0.1098.92USN-4578-1
linux-image-azure-lts-18.04Ubuntu
Fixed in:4.15.0.1099.72USN-4578-1
linux-image-gcpUbuntu
Fixed in:4.15.0.1086.87USN-4578-1
linux-image-gcp-lts-18.04Ubuntu
Fixed in:4.15.0.1086.104USN-4578-1
linux-image-genericUbuntu
Fixed in:4.15.0.121.108USN-4578-1
linux-image-generic-hwe-16.04Ubuntu
Fixed in:4.15.0.120.121USN-4578-1
linux-image-generic-lpaeUbuntu
Fixed in:4.15.0.121.108USN-4578-1
linux-image-generic-lpae-hwe-16.04Ubuntu
Fixed in:4.15.0.120.121USN-4578-1
linux-image-gkeUbuntu
Fixed in:4.15.0.1086.87USN-4578-1
Fixed in:4.15.0.1072.76USN-4578-1
linux-image-gke-4.15Ubuntu
Fixed in:4.15.0.1072.76USN-4578-1
linux-image-kvmUbuntu
Fixed in:4.15.0.1077.73USN-4578-1
linux-image-lowlatencyUbuntu
Fixed in:4.15.0.121.108USN-4578-1
linux-image-lowlatency-hwe-16.04Ubuntu
Fixed in:4.15.0.120.121USN-4578-1
linux-image-oemUbuntu
Fixed in:4.15.0.120.121USN-4578-1
Fixed in:4.15.0.1099.103USN-4578-1
linux-image-oracleUbuntu
Fixed in:4.15.0.1056.46USN-4578-1
linux-image-oracle-lts-18.04Ubuntu
Fixed in:4.15.0.1057.67USN-4578-1
linux-image-raspi2Ubuntu
Fixed in:4.15.0.1073.70USN-4578-1
linux-image-snapdragonUbuntu
Fixed in:4.15.0.1089.92USN-4578-1
linux-image-virtualUbuntu
Fixed in:4.15.0.121.108USN-4578-1
linux-image-virtual-hwe-16.04Ubuntu
Fixed in:4.15.0.120.121USN-4578-1
linux-kvmUbuntu
Fixed in:4.15.0-1077.79USN-4578-1
linux-oemUbuntu
Fixed in:4.15.0-1099.109USN-4578-1
linux-oracleUbuntu
Fixed in:4.15.0-1056.61~16.04.1USN-4578-1
Fixed in:4.15.0-1057.62USN-4578-1
linux-raspi2Ubuntu
Fixed in:4.15.0-1073.78USN-4578-1
linux-snapdragonUbuntu
Fixed in:4.15.0-1089.98USN-4578-1
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
2.14%probability of exploitation in 30 days
80thpercentile
Elevated risk: more likely to be exploited than 80% of all known CVEs.
References
Exploit1
Third-Party Advisory5
Related Vulnerabilities
Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-0708 | Critical | 9.8 | 100% | KEV + Ransom | - |
| CVE-2021-31166 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2015-5119 | Critical | 9.8 | 99% | KEV | - |
| CVE-2010-3962 | High | 8.1 | 97% | KEV | - |
| CVE-2015-0313 | Critical | 9.8 | 96% | KEV | Fix |
| CVE-2017-9798 | High | 7.5 | 95% | - | Fix |
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.