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Linux KernelOperating system · Linux

CVE-2024-50258

MEDIUM · 5.5 CVSS v3.1 Published 2024-11-09
Fix available
A fix is available. Upgrade to after 6.11.7 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: net: fix crash when config small gso_max_size/gso_ipv4_max_size Config a small gso_max_size/gso_ipv4_max_size will lead to an underflow in sk_dst_gso_max_size(), which may trigger a BUG_ON crash, because sk->sk_gso_max_size would be much bigger than device limits. Call Trace: tcp_write_xmit tso_segs = tcp_init_tso_segs(skb, mss_now); tcp_set_skb_tso_segs tcp_skb_pcount_set // skb->len = 524288, mss_now = 8 // u16 tso_segs = 524288/8 = 65535 -> 0 tso_segs = DIV_ROUND_UP(skb->len, mss_now) BUG_ON(!tso_segs) Add check for the minimum value of gso_max_size and gso_ipv4_max_size.

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:>= 4.16, <= 6.6.60>= 6.7, <= 6.11.7= 6.12

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 a release after 6.11.7
Vendor patch git.kernel.org →
Recommended fix High confidence

Linux Kernel 6.6.61, 6.11.8, 6.12.1 or later (depending on your base version)

  1. 1. Identify the currently running Linux kernel version using `uname -r`
  2. 2. Check if the running kernel version is affected: any version >= 4.16 through 6.6.60, >= 6.7 through 6.11.7, or exactly 6.12
  3. 3. Update the system package manager and install a newer kernel version
  4. 4. For RHEL/CentOS/Fedora: run `dnf update kernel` or `yum update kernel`
  5. 5. For Debian/Ubuntu: run `apt-get update && apt-get install linux-image-<version>`
  6. 6. Reboot the system to load the new kernel using `reboot`
  7. 7. Verify the fix is applied by checking the kernel version with `uname -r` and confirming it's newer than the affected versions
  8. 8. Alternatively, if using a distribution with Long Term Support (LTS) kernels, ensure you have the latest LTS kernel installed
Caveat Kernel upgrades may require system reboot and could introduce compatibility issues with custom kernel modules or specific hardware drivers; ensure backup of critical data and test in non-production environment first

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

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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-2024-50258 in production — separate from our analysis above.

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What this is

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