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Linux KernelOperating system · Linux

CVE-2024-41030

MEDIUM · 5.5 CVSS v3.1 Published 2024-07-29
Fix available
A fix is available. Upgrade to 6.1.100 / 6.6.41 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: ksmbd: discard write access to the directory open may_open() does not allow a directory to be opened with the write access. However, some writing flags set by client result in adding write access on server, making ksmbd incompatible with FUSE file system. Simply, let's discard the write access when opening a directory. list_add corruption. next is NULL. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:26! pc : __list_add_valid+0x88/0xbc lr : __list_add_valid+0x88/0xbc Call trace: __list_add_valid+0x88/0xbc fuse_finish_open+0x11c/0x170 fuse_open_common+0x284/0x5e8 fuse_dir_open+0x14/0x24 do_dentry_open+0x2a4/0x4e0 dentry_open+0x50/0x80 smb2_open+0xbe4/0x15a4 handle_ksmbd_work+0x478/0x5ec process_one_work+0x1b4/0x448 worker_thread+0x25c/0x430 kthread+0x104/0x1d4 ret_from_fork+0x10/0x20

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-476

The code follows a pointer that is null, crashing the process. An attacker who can reliably trigger it turns the crash into a denial of service. The fix is checking for null before use and handling the failure path gracefully.

General guidance for the null pointer dereference class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 5.15, < 6.1.100>= 6.2, < 6.6.41>= 6.7, < 6.9.10= 6.10

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.1.100 / 6.6.41 / 6.9.10 or later
Fixed in 6.1.1006.6.416.9.10
Vendor patch git.kernel.org →
Recommended fix High confidence

6.1.100+ / 6.6.41+ / 6.9.10+ / 6.10.1+ (choose based on current branch)

  1. Upgrade the Linux kernel to a fixed version that includes the patch commit 198498b2049c0f11f7670be6974570e02b0cc035
  2. For systems running kernel 5.15.x: upgrade to kernel 6.1.100 or later (or migrate to 6.1.x stable branch >= 6.1.100)
  3. For systems running kernel 6.2.x through 6.5.x: upgrade to kernel 6.6.41 or later (or migrate to 6.6.x stable branch >= 6.6.41)
  4. For systems running kernel 6.7.x through 6.8.x: upgrade to kernel 6.9.10 or later (or migrate to 6.9.x stable branch >= 6.9.10)
  5. For systems running kernel 6.10.x: upgrade to kernel 6.10.1 or later (or migrate to 6.10.x stable branch >= 6.10.1)
  6. After kernel upgrade, reboot the system to load the fixed kernel
Caveat Kernel upgrades typically have low risk but may require driver rebuilding for out-of-tree modules; ensure compatibility of critical kernel modules with the target version before production deployment

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $2,850. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-41030 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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