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CVE Record

CVE-2022-50082: ext4: fix warning in ext4_iomap_begin as race between bmap and write

In the Linux kernel, the following vulnerability has been resolved: ext4: fix warning in ext4_iomap_begin as race between bmap and write We got issue as follows: ------------[ cut here ]------------ WARNING: CPU: 3 PID: 9310 at fs/ext4/inode.c:3441 ext4_iomap_begin+0x182/0x5d0 RIP: 0010:ext4_iomap_begin+0x182/0x5d0 RSP: 0018:ffff88812460fa08 EFLAGS: 00010293 RAX: ffff88811f168000 RBX: 0000000000000000 RCX: ffffffff97793c12 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88812c669160 R08: ffff88811f168000 R09: ffffed10258cd20f R10: ffff88812c669077 R11: ffffed10258cd20e R12: 0000000000000001 R13: 00000000000000a4 R14: 000000000000000c R15: ffff88812c6691ee FS: 00007fd0d6ff3740(0000) GS:ffff8883af180000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd0d6dda290 CR3: 0000000104a62000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_apply+0x119/0x570 iomap_bmap+0x124/0x150 ext4_bmap+0x14f/0x250 bmap+0x55/0x80 do_vfs_ioctl+0x952/0xbd0 __x64_sys_ioctl+0xc6/0x170 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Above issue may happen as follows: bmap write bmap ext4_bmap iomap_bmap ext4_iomap_begin ext4_file_write_iter ext4_buffered_write_iter generic_perform_write ext4_da_write_begin ext4_da_write_inline_data_begin ext4_prepare_inline_data ext4_create_inline_data ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA); if (WARN_ON_ONCE(ext4_has_inline_data(inode))) ->trigger bug_on To solved above issue hold inode lock in ext4_bamp.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50082 is a Linux kernel ext4 filesystem race condition involving block mapping and writes. The public record describes a kernel warning path, not confirmed data theft, privilege escalation, or remote compromise. Business urgency depends on whether affected Linux kernels use ext4 in production workloads.

Executive priority

Treat as a kernel hygiene item until impact is clarified. Prioritize patching on ext4-heavy production systems, but current public evidence does not support emergency response or active-exploitation claims.

Technical view

The issue is in ext4_bmap/ext4_iomap_begin. A concurrent bmap path and write path can set EXT4_INODE_INLINE_DATA while ext4_iomap_begin checks inline data, triggering a WARN_ON_ONCE. The stated fix is to hold the inode lock in ext4_bmap.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions with ext4 filesystems. The bundle lists Linux as affected and references stable kernel fixes, but does not provide distribution package status or CVSS impact.

Exploitation context

The provided sources do not show active exploitation, and KEV is false. The record describes a local race condition between filesystem operations, but does not provide exploitability, attacker prerequisites, or security impact details.

Researcher notes

The key evidence is the race narrative and fix statement in the CVE description. Public data lacks CVSS, CWE, exploit status, and distribution mappings, so validation should focus on kernel lineage, ext4 usage, and backported fix presence.

Mitigation direction

  • Check OS vendor guidance for patched kernel packages.
  • Apply Linux stable or distribution updates containing the referenced ext4 fix.
  • Prioritize systems using ext4 for critical workloads.
  • Schedule reboot validation where kernel updates require it.

Validation and detection

  • Inventory Linux kernel versions across affected hosts.
  • Confirm whether production filesystems use ext4.
  • Verify installed kernel changelogs reference this CVE or fix commits.
  • Review kernel logs for ext4_iomap_begin warnings.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2022-50082 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
6Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxac58e4fb03f9d111d733a4ad379d06eef3a24705, ac58e4fb03f9d111d733a4ad379d06eef3a24705, ac58e4fb03f9d111d733a4ad379d06eef3a24705, ac58e4fb03f9d111d733a4ad379d06eef3a24705, ac58e4fb03f9d111d733a4ad379d06eef3a24705unaffected
LinuxLinux5.7, 0, 5.10.137, 5.15.61, 5.18.18, 5.19.2, 6.0affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.