Vulnerability Details CVE-2026-53278
In the Linux kernel, the following vulnerability has been resolved:
arm_mpam: Check whether the config array is allocated before destroying it
__destroy_component_cfg() is called to free the configuration array.
It uses the embedded 'garbage' structure, which means the array has
to be allocated.
If __destroy_component_cfg() is called from mpam_disable() before the
configuration was ever allocated, then a NULL pointer is dereferenced.
Check for this case and return early if the configuration is not
allocated.
__destroy_component_cfg() also frees the mbwu_state as this is allocated
by __allocate_component_cfg(). As the mbwu_state is allocated after
comp->cfg is set, and is also under mpam_list_lock, only the first
pointer needs checking.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.4%
CVSS Severity
CVSS v3 Score 5.5
References
Products affected by CVE-2026-53278
-
cpe:2.3:o:linux:linux_kernel:6.19
-
cpe:2.3:o:linux:linux_kernel:6.19.1
-
cpe:2.3:o:linux:linux_kernel:6.19.10
-
cpe:2.3:o:linux:linux_kernel:6.19.11
-
cpe:2.3:o:linux:linux_kernel:6.19.12
-
cpe:2.3:o:linux:linux_kernel:6.19.13
-
cpe:2.3:o:linux:linux_kernel:6.19.14
-
cpe:2.3:o:linux:linux_kernel:6.19.3
-
cpe:2.3:o:linux:linux_kernel:6.19.4
-
cpe:2.3:o:linux:linux_kernel:6.19.6
-
cpe:2.3:o:linux:linux_kernel:6.19.7
-
cpe:2.3:o:linux:linux_kernel:6.19.8
-
cpe:2.3:o:linux:linux_kernel:6.19.9
-
cpe:2.3:o:linux:linux_kernel:7.0
-
cpe:2.3:o:linux:linux_kernel:7.0.1
-
cpe:2.3:o:linux:linux_kernel:7.0.2
-
cpe:2.3:o:linux:linux_kernel:7.0.3
-
cpe:2.3:o:linux:linux_kernel:7.0.4
-
cpe:2.3:o:linux:linux_kernel:7.0.5
-
cpe:2.3:o:linux:linux_kernel:7.0.6
-
cpe:2.3:o:linux:linux_kernel:7.0.7
-
cpe:2.3:o:linux:linux_kernel:7.0.8
-
cpe:2.3:o:linux:linux_kernel:7.0.9
-
cpe:2.3:o:linux:linux_kernel:7.1