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-raspi2Upgrade linux-image-4.15.0-1011-awsUpgrade linux-image-4.15.0-1010-gcpUpgrade linux-image-4.15.0-1012-kvmUpgrade linux-image-4.15.0-24-generic-lpaeUpgrade linux-image-generic-lpae-hwe-16.04Upgrade linux-image-4.15.0-24-genericUpgrade linux-image-gcpUpgrade linux-image-snapdragonUpgrade linux-image-azureUpgrade linux-image-4.15.0-24-snapdragonUpgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-oemUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-4.15.0-24-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-generic-lpaeUpgrade linux-image-4.15.0-1013-raspi2Upgrade linux-image-4.15.0-1014-azureUpgrade linux-image-genericUpgrade linux-image-lowlatencyUpgrade linux-image-generic-hwe-16.04 | Jul 4, 2018 | Apr 1, 2018 |
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