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Linux KernelOperating system · Linux

CVE-2024-49938

MEDIUM · 5.5 CVSS v3.1 Published 2024-10-21
Fix available
A fix is available. Upgrade to 5.10.227 / 5.15.168 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: wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit Syzbot points out that skb_trim() has a sanity check on the existing length of the skb, which can be uninitialised in some error paths. The intent here is clearly just to reset the length to zero before resubmitting, so switch to calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length() already contains a call to skb_reset_tail_pointer(), so remove the redundant call. The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.

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

A detailed technical summary for this CVE is being prepared.

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:< 5.10.227>= 5.11, < 5.15.168>= 5.16, < 6.1.113>= 6.2, < 6.6.55>= 6.7, < 6.10.14>= 6.11, < 6.11.3

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 5.10.227 / 5.15.168 / 6.1.113 or later
Fixed in 5.10.2275.15.1686.1.113
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to kernel >= 6.6.55 (or latest stable 6.6.x), or >= 6.1.113 for 6.1.x branch, or >= 5.15.168 for 5.15.x branch, or >= 5.10.227 for 5.10.x branch depending on your current branch

  1. Identify your current Linux kernel version using `uname -r`
  2. Determine which version range your current kernel falls into from: < 5.10.227, >= 5.11 and < 5.15.168, >= 5.16 and < 6.1.113, or >= 6.2 and < 6.6.55
  3. Upgrade to a fixed kernel version: for 5.10.x upgrade to >= 5.10.227, for 5.11-5.15.x upgrade to >= 5.15.168, for 5.16-6.1.x upgrade to >= 6.1.113, for 6.2-6.6.x upgrade to >= 6.6.55, or use latest stable 6.6 branch or later
  4. On Debian/Ubuntu: `sudo apt-get update && sudo apt-get install linux-image-generic` and reboot
  5. On RHEL/CentOS: `sudo yum update kernel` and reboot
  6. On Fedora: `sudo dnf update kernel` and reboot
Caveat Kernel upgrades may require driver recompilation or system reboot; ensure compatible firmware and drivers are available

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 $1,600. 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-2024-49938 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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