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CVE-2018-1095

Description

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.

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.153

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-3695-1) linux-image-aws_4.15.0.1011.11_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-gcp_4.15.0.1010.12_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-gke_4.15.0.1010.12_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-kvm_4.15.0.1012.12_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-oem_4.15.0.1009.11_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-azure_4.15.0.1014.14_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-1010-gcp_4.15.0-1010.10_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-1011-aws_4.15.0-1011.11_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-1012-kvm_4.15.0-1012.12_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-1014-azure_4.15.0-1014.14_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-24-generic_4.15.0-24.26_i386.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-24-generic_4.15.0-24.26_amd64.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-24-lowlatency_4.15.0-24.26_i386.debLinux
Linux kernel (USN-3695-1) linux-image-4.15.0-24-lowlatency_4.15.0-24.26_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3695-2) linux-image-4.15.0-1014-azure_4.15.0-1014.14~16.04.1_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3695-2) linux-image-4.15.0-24-generic_4.15.0-24.26~16.04.1_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3695-2) linux-image-4.15.0-24-generic_4.15.0-24.26~16.04.1_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3695-2) linux-image-4.15.0-24-lowlatency_4.15.0-24.26~16.04.1_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3695-2) linux-image-4.15.0-24-lowlatency_4.15.0-24.26~16.04.1_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234