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CVE-2026-53278— arm_mpam: Check whether the config array is allocated before destroying it

AI Predicted 3.3 Difficulty: Moderate EPSS 0.11% · P1

Possible ATT&CK Techniques 1AI

T1211 · Exploitation for Stealth

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524< 8eb6dc76eeae5302c0d885906a0e469ef9630a59affected
3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524< 6ccbb613b42a1f1ba7bfd547a148f644a902a25caffected
6.19affected
< 6.19unaffected
7.0.10≤ 7.0.*unaffected
7.1≤ *unaffected
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I. Basic Information for CVE-2026-53278

Vulnerability Information
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Vulnerability Title
arm_mpam: Check whether the config array is allocated before destroying it
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.19版本存在安全漏洞，该漏洞源于arm_mpam驱动中未检查配置数组是否已分配，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524 ~ 8eb6dc76eeae5302c0d885906a0e469ef9630a59 -
LinuxLinux 6.19 -

II. Public POCs for CVE-2026-53278

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III. Intelligence Information for CVE-2026-53278

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Patches & Fixes for CVE-2026-53278 (1)

Same Patch Batch · Linux · 2026-06-26 · 47 CVEs total

CVE-2026-533099.8 CRITICALocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-533228.8 HIGHvfio/pci: Clean up DMABUFs before disabling function
CVE-2026-532818.8 HIGHiommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-533007.8 HIGHnet: enetc: fix NTMP DMA use-after-free issue
CVE-2026-532907.8 HIGHdrm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-532847.5 HIGHbtrfs: only release the dirty pages io tree after successful writes
CVE-2026-53279drm/gma500/oaktrail_lvds: fix hang on init failure
CVE-2026-53288arm64: Reserve an extra page for early kernel mapping
CVE-2026-53285drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED
CVE-2026-53282x86/kexec: Push kjump return address even for non-kjump kexec
CVE-2026-53283iommu/amd: Bounds-check devid in __rlookup_amd_iommu()
CVE-2026-53280iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()
CVE-2026-53291ALSA: hda/conexant: Fix missing error check for jack detection
CVE-2026-53293drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG
CVE-2026-53294mailbox: mailbox-test: don't free the reused channel
CVE-2026-53295mailbox: add sanity check for channel array
CVE-2026-53296mailbox: mailbox-test: free channels on probe error
CVE-2026-53297net: mana: Guard mana_remove against double invocation
CVE-2026-53298net: airoha: Move ndesc initialization at end of airoha_qdma_init_rx_queue()
CVE-2026-53299net: airoha: Move ndesc initialization at end of airoha_qdma_init_tx()

Showing top 20 of 47 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53278

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