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CVE-2026-90419— nilfs2: prevent out-of-bounds read in super root block parsing

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.

在 Linux 内核中，以下漏洞已得到修复： nilfs2：防止超级根块解析过程中的越界读取 在调用 之前，超级根（super-root）inodes 的元数据大小被无条件信任。 本次修复通过拒绝那些计算出的磁盘占用（on-disk footprint）超过文件系统块大小的超级根 inode 大小，来防止畸形的文件系统镜像导致 读取超出超级根块的范围。 [ryusuke：澄清提交标题]

CVSS 7.1 · High EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 16df2520502867a4f34e202b89d01243d59bb8b5 affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< dcc85fc28f884038735464f6f104dda9c7dbfad6 affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 5b69ebe20d7f944c1f45177dca0c11474ac277cc affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 7029e70cf86d5c54c0a2812479b0bee2cabcbaaa affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 71bd64471ff583101b4a33dfc838ce29aef57960 affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 842397fdfd2e61d6470166c796f3125b6c27a162 affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 15c8559376416a84c3d8402fd8d0c89bb323d05f affected
8a9d2191e9f43bbcd256a9a6871bd73434c83f2f< 7cb2f76a6a2ba2130b577cb8ac13e1e46c4fc689 affected
… +10 more rows
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I. Basic Information for CVE-2026-90419

Vulnerability Information
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Vulnerability Title
nilfs2: prevent out-of-bounds read in super root block parsing
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent out-of-bounds read in super root block parsing super-root inode metadata size is trusted before nilfs_read_inode_common(). Reject super-root inode sizes whose computed on-disk footprint exceeds the filesystem block size. This prevents malformed filesystem images from making nilfs_read_inode_common() read past the end of the super-root block. [ryusuke: clarify the commit title]
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f ~ 16df2520502867a4f34e202b89d01243d59bb8b5 -
Linux Linux 2.6.30 -

II. Public POCs for CVE-2026-90419

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III. Intelligence Information for CVE-2026-90419

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Patches & Fixes for CVE-2026-90419 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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