The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel | Aug 28, 2019 | Apr 2, 2018 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 2, 2018 |
| Redhat_linux | — | Upgrade kernel | Oct 31, 2018 | Apr 1, 2018 |
| Ubuntu | — | Upgrade linux-image-4.15.0-24-snapdragonUpgrade linux-image-4.15.0-1012-kvmUpgrade linux-image-snapdragonUpgrade linux-image-4.15.0-1011-awsUpgrade linux-image-4.15.0-24-genericUpgrade linux-image-awsUpgrade linux-image-4.15.0-1010-gcpUpgrade linux-image-4.15.0-24-generic-lpaeUpgrade linux-image-gcpUpgrade linux-image-azureUpgrade linux-image-generic-lpae-hwe-16.04Upgrade linux-image-raspi2Upgrade linux-image-kvmUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-generic-hwe-16.04Upgrade linux-image-gkeUpgrade linux-image-genericUpgrade linux-image-4.15.0-24-lowlatencyUpgrade linux-image-4.15.0-1013-raspi2Upgrade linux-image-lowlatencyUpgrade linux-image-oemUpgrade linux-image-generic-lpaeUpgrade linux-image-4.15.0-1014-azure | Jul 4, 2018 | Apr 1, 2018 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub