CVE-2024-0443

A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

History

18 Jan 2024, 20:16

Type Values Removed Values Added
References () https://access.redhat.com/errata/RHSA-2023:7077 - () https://access.redhat.com/errata/RHSA-2023:7077 - Third Party Advisory
References () https://access.redhat.com/security/cve/CVE-2024-0443 - () https://access.redhat.com/security/cve/CVE-2024-0443 - Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2257968 - () https://bugzilla.redhat.com/show_bug.cgi?id=2257968 - Issue Tracking, Third Party Advisory
References () https://lore.kernel.org/linux-block/20221215033132.230023-3-longman@redhat.com/ - () https://lore.kernel.org/linux-block/20221215033132.230023-3-longman@redhat.com/ - Mailing List
First Time Redhat enterprise Linux
Linux linux Kernel
Fedoraproject
Redhat
Linux
Fedoraproject fedora
CWE CWE-668
CPE cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*

14 Jan 2024, 15:15

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2023:7077 -

12 Jan 2024, 13:47

Type Values Removed Values Added
Summary
  • (es) Se encontró un fallo en la ruta de destrucción de blkgs en block/blk-cgroup.c en el kernel de Linux, lo que provocó un problema de pérdida de memoria de cgroup blkio. Cuando se destruye un cgroup, cgroup_rstat_flush() solo se llama en css_release_work_fn(), que se llama cuando el recuento de referencias de blkcg llega a 0. Esta dependencia circular evitará que blkcg y algunos blkgs se liberen después de desconectarse. Este problema puede permitir que un atacante con acceso local cause inestabilidad en el sistema, como un error de falta de memoria.

12 Jan 2024, 00:15

Type Values Removed Values Added
New CVE

Information

Published : 2024-01-12 00:15

Updated : 2024-01-18 20:16


NVD link : CVE-2024-0443

Mitre link : CVE-2024-0443

CVE.ORG link : CVE-2024-0443


JSON object : View

Products Affected

redhat

  • enterprise_linux

fedoraproject

  • fedora

linux

  • linux_kernel
CWE
CWE-668

Exposure of Resource to Wrong Sphere

CWE-402

Transmission of Private Resources into a New Sphere ('Resource Leak')