CVE-2024-36007mlxsw: spectrum_acl_tcam: Fix warning during rehash

Description

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix warning during rehash As previously explained, the rehash delayed work migrates filters from one region to another. This is done by iterating over all chunks (all the filters with the same priority) in the region and in each chunk iterating over all the filters. When the work runs out of credits it stores the current chunk and entry as markers in the per-work context so that it would know where to resume the migration from the next time the work is scheduled. Upon error, the chunk marker is reset to NULL, but without resetting the entry markers despite being relative to it. This can result in migration being resumed from an entry that does not belong to the chunk being migrated. In turn, this will eventually lead to a chunk being iterated over as if it is an entry. Because of how the two structures happen to be defined, this does not lead to KASAN splats, but to warnings such as [1]. Fix by creating a helper that resets all the markers and call it from all the places the currently only reset the chunk marker. For good measures also call it when starting a completely new rehash. Add a warning to avoid future cases. [1] WARNING: CPU: 7 PID: 1076 at drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c:407 mlxsw_afk_encode+0x242/0x2f0 Modules linked in: CPU: 7 PID: 1076 Comm: kworker/7:24 Tainted: G W 6.9.0-rc3-custom-00880-g29e61d91b77b #29 Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019 Workqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work RIP: 0010:mlxsw_afk_encode+0x242/0x2f0 [...] Call Trace: <TASK> mlxsw_sp_acl_atcam_entry_add+0xd9/0x3c0 mlxsw_sp_acl_tcam_entry_create+0x5e/0xa0 mlxsw_sp_acl_tcam_vchunk_migrate_all+0x109/0x290 mlxsw_sp_acl_tcam_vregion_rehash_work+0x6c/0x470 process_one_work+0x151/0x370 worker_thread+0x2cb/0x3e0 kthread+0xd0/0x100 ret_from_fork+0x34/0x50 </TASK>

Timeline

Scores

EPSS (exploitation in 30 days)

0.23% · top 86% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

• Linux · Linux

  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 0b88631855026b55cad901ac28d081e0f358e596
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 1d76bd2a0034d0d08045c1c6adf2235d88982952
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 039992b6d2df097c65f480dcf269de3d2656f573
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 751d352858108314efd33dddd5a9a2b6bf7d6916
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < e890456051fe8c57944b911defb3e6de91315861
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 17e9e0bbae652b9b2049e51699e93dfa60b2988d
  • affected 6f9579d4e3021b17b0a4cde6b04a6c94c9575cdf – < 743edc8547a92b6192aa1f1b6bb78233fa21dc9b

• Linux · Linux

  • affected 5.1
  • unaffected < 5.1
  • unaffected 5.4.275 – ≤ 5.4.*
  • unaffected 5.10.216 – ≤ 5.10.*
  • unaffected 5.15.158 – ≤ 5.15.*
  • unaffected 6.1.90 – ≤ 6.1.*
  • unaffected 6.6.30 – ≤ 6.6.*
  • unaffected 6.8.9 – ≤ 6.8.*
  • unaffected 6.9 – ≤ *

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2024-35817 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-36007](https://cveledger.app/badge/CVE-2024-36007.svg)](https://cveledger.app/cve/CVE-2024-36007)

Record last updated 15 Oct 2026, 00:42 UTC.