CVE-2023-53266 — Missing Release of Memory after Effective Lifetime in Linux

CWE-401 — Missing Release of Memory after Effective LifetimeCWE-772 — Missing Release of Resource after Effective Lifetime5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 94.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 16

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: acpi: Fix possible memory leak of ffh_ctxt Allocated 'ffh_ctxt' memory leak is possible if the SMCCC version and conduit checks fail and -EOPNOTSUPP is returned without freeing the allocated memory. Fix the same by moving the allocation after the SMCCC version and conduit checks.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel6.2 — 6.2.3
▶Debianlinux/linux_kernel< 6.3.7-1+1
▶CVEListV5linux/linux1d280ce099db396e092cac1aa9bf2ea8beee6d76 — 7521da2eb42d65f89f511b7912d3757cf3d9168a+2
▶debiandebian/linux< linux 6.3.7-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53266: In the Linux kernel, the following vulnerability has been resolved: arm64: acpi: Fix possible memory leak of ffh_ctxt Allocated 'ffh_ctxt' memory leak↗2025-09-16
▶
GHSA
GHSA-cm47-3p73-qqc3: In the Linux kernel, the following vulnerability has been resolved: arm64: acpi: Fix possible memory leak of ffh_ctxt Allocated 'ffh_ctxt' memory le↗2025-09-16
▶

📋Vendor Advisories

2
Red Hat
kernel: arm64: acpi: Fix possible memory leak of ffh_ctxt↗2025-09-16
▶
Debian
CVE-2023-53266: linux - In the Linux kernel, the following vulnerability has been resolved: arm64: acpi...↗2023
▶
CVE-2023-53266 — Linux vulnerability | cvebase