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CVE-2026-53295— mailbox: add sanity check for channel array

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在安全漏洞，该漏洞源于未对mailbox控制器的channel array进行完整性检查，可能导致后期解引用时引发系统崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 5cc3300fab262b26c28bc2fc06df693410c3840b affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 0f11444271110d9b5bc6316a153c6431abda899c affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< d44872a569b8fbacde457ff2587a775e5004bb79 affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 14aed0d4e58389cc6a88acf8610b12d3e476272b affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 6362c4a7d7e21e68cd9aa04df7cde16befba3a4b affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 9dd7489943324298bb0f385495795a82f1dd6507 affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< 37792091ab28ba030fd8d61184c47d4d51294170 affected
2b6d83e2b8b7de82331a6a1dcd64b51020a6031c< c1aad75595fb67edc7fda8af249d3b886efa1be9 affected
… +10 more rows
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I. Basic Information for CVE-2026-53295

Vulnerability Information
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Vulnerability Title
mailbox: add sanity check for channel array
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mailbox: add sanity check for channel array Fail gracefully if there is no channel array attached to the mailbox controller. Otherwise the later dereference will cause an OOPS which might not be seen because mailbox controllers might instantiate very early. Remove the comment explaining the obvious while here.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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存在安全漏洞，该漏洞源于未对mailbox控制器的channel array进行完整性检查，可能导致后期解引用时引发系统崩溃。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c ~ 5cc3300fab262b26c28bc2fc06df693410c3840b -
Linux Linux 3.18 -

II. Public POCs for CVE-2026-53295

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III. Intelligence Information for CVE-2026-53295

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Patches & Fixes for CVE-2026-53295 (8)

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

CVE-2026-53309 9.8 CRITICAL ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-53281 8.8 HIGH iommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-53322 8.8 HIGH vfio/pci: Clean up DMABUFs before disabling function
CVE-2026-53300 7.8 HIGH net: enetc: fix NTMP DMA use-after-free issue
CVE-2026-53290 7.8 HIGH drm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-53284 7.5 HIGH btrfs: only release the dirty pages io tree after successful writes
CVE-2026-53324 net: mana: Use pci_name() for debugfs directory naming
CVE-2026-53306 tty: hvc_iucv: fix off-by-one in number of supported devices
CVE-2026-53319 blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default()
CVE-2026-53321 io_uring/napi: cap busy_poll_to 10 msec
CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()
CVE-2026-53323 net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
CVE-2026-53313 drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths
CVE-2026-53312 iommu/riscv: Remove overflows on the invalidation path
CVE-2026-53311 fuse: fix uninit-value in fuse_dentry_revalidate()
CVE-2026-53310 soc/tegra: cbb: Fix cross-fabric target timeout lookup
CVE-2026-53308 power: supply: max77705: Free allocated workqueue and fix removal order
CVE-2026-53307 pinctrl: pinconf-generic: Fully validate 'pinmux' property
CVE-2026-53305 usb: typec: ps883x: Fix Oops at unbind
CVE-2026-53303 f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

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-2026-53295

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