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CVE-2022-50367— fs: fix UAF/GPF bug in nilfs_mdt_destroy

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理security_inode_alloc失败情况，可能导致释放后重用或空指针取消引用。

CVSS 7.8 · High EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d1ff475d7c83289d0a7faef346ea3bbf90818bad affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c0aa76b0f17f59dd9c9d3463550a2986a1d592e4 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ec2aab115eb38ac4992ea2fcc2a02fbe7af5cf48 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 70e4f70d54e0225f91814e8610477d65f33cefe4 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1e555c3ed1fce4b278aaebe18a64a934cece57d8 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 64b79e632869ad3ef6c098a4731d559381da1115 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 81de80330fa6907aec32eb54c5619059e6e36452 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2a96b532098284ecf8e4849b8b9e5fc7a28bdee9 affected
… +12 more rows
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I. Basic Information for CVE-2022-50367

Vulnerability Information
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Vulnerability Title
fs: fix UAF/GPF bug in nilfs_mdt_destroy
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理security_inode_alloc失败情况，可能导致释放后重用或空指针取消引用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ d1ff475d7c83289d0a7faef346ea3bbf90818bad -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2022-50367

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III. Intelligence Information for CVE-2022-50367

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Same Patch Batch · Linux · 2025-09-17 · 56 CVEs total

CVE-2023-53338 9.8 CRITICAL lwt: Fix return values of BPF xmit ops
CVE-2022-50373 9.8 CRITICAL fs: dlm: fix race in lowcomms
CVE-2022-50363 9.8 CRITICAL skmsg: pass gfp argument to alloc_sk_msg()
CVE-2023-53360 9.8 CRITICAL NFSv4.2: Rework scratch handling for READ_PLUS (again)
CVE-2023-53358 8.8 HIGH ksmbd: fix racy issue under cocurrent smb2 tree disconnect
CVE-2023-53340 7.8 HIGH net/mlx5: Collect command failures data only for known commands
CVE-2022-50368 7.8 HIGH drm/msm/dsi: fix memory corruption with too many bridges
CVE-2022-50362 7.8 HIGH dmaengine: hisilicon: Add multi-thread support for a DMA channel
CVE-2023-53354 7.8 HIGH skbuff: skb_segment, Call zero copy functions before using skbuff frags
CVE-2022-50355 7.8 HIGH staging: vt6655: fix some erroneous memory clean-up loops
CVE-2022-50354 7.8 HIGH drm/amdkfd: Fix kfd_process_device_init_vm error handling
CVE-2023-53335 7.5 HIGH RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()
CVE-2022-50365 7.5 HIGH skbuff: Account for tail adjustment during pull operations
CVE-2023-53336 media: ipu-bridge: Fix null pointer deref on SSDB/PLD parsing warnings
CVE-2022-50374 Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
CVE-2022-50353 mmc: wmt-sdmmc: fix return value check of mmc_add_host()
CVE-2023-53337 nilfs2: do not write dirty data after degenerating to read-only
CVE-2022-50372 cifs: Fix memory leak when build ntlmssp negotiate blob failed
CVE-2022-50369 drm/vkms: Fix null-ptr-deref in vkms_release()
CVE-2022-50371 led: qcom-lpg: Fix sleeping in atomic

Showing top 20 of 56 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50367

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