CVE-2024-53088: i40e: fix race condition by adding filter's intermediate sync state
First published: Tue Nov 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i40e: fix race condition by adding filter's intermediate sync state Fix a race condition in the i40e driver that leads to MAC/VLAN filters becoming corrupted and leaking. Address the issue that occurs under heavy load when multiple threads are concurrently modifying MAC/VLAN filters by setting mac and port VLAN. 1. Thread T0 allocates a filter in i40e_add_filter() within i40e_ndo_set_vf_port_vlan(). 2. Thread T1 concurrently frees the filter in __i40e_del_filter() within i40e_ndo_set_vf_mac(). 3. Subsequently, i40e_service_task() calls i40e_sync_vsi_filters(), which refers to the already freed filter memory, causing corruption. Reproduction steps: 1. Spawn multiple VFs. 2. Apply a concurrent heavy load by running parallel operations to change MAC addresses on the VFs and change port VLANs on the host. 3. Observe errors in dmesg: "Error I40E_AQ_RC_ENOSPC adding RX filters on VF XX, please set promiscuous on manually for VF XX". Exact code for stable reproduction Intel can't open-source now. The fix involves implementing a new intermediate filter state, I40E_FILTER_NEW_SYNC, for the time when a filter is on a tmp_add_list. These filters cannot be deleted from the hash list directly but must be removed using the full process.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.10<5.15.172 | |
| Linux Kernel | >=5.16<6.1.117 | |
| Linux Kernel | >=6.2<6.6.61 | |
| Linux Kernel | >=6.7<6.11.8 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 | |
| Linux Kernel | =6.12-rc6 |
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Reference Links
- https://git.kernel.org/stable/c/262dc6ea5f1eb18c4d08ad83d51222d0dd0dd42a
- https://git.kernel.org/stable/c/6e046f4937474bc1b9fa980c1ad8f3253fc638f6
- https://git.kernel.org/stable/c/7ad3fb3bfd43feb4e15c81dffd23ac4e55742791
- https://git.kernel.org/stable/c/bf5f837d9fd27d32fb76df0a108babcaf4446ff1
- https://git.kernel.org/stable/c/f30490e9695ef7da3d0899c6a0293cc7cd373567
- https://lore.kernel.org/linux-cve-announce/2024111906-CVE-2024-53088-795c@gregkh/T
- https://access.redhat.com/errata/RHSA-2025:0066
- https://access.redhat.com/errata/RHSA-2025:0065
- https://access.redhat.com/errata/RHSA-2025:0057
- https://access.redhat.com/errata/RHSA-2025:0578
- https://bugzilla.redhat.com/show_bug.cgi?id=2327328
Frequently Asked Questions
What is the severity of CVE-2024-53088?
CVE-2024-53088 is classified with a medium severity rating due to a race condition in the i40e driver that can lead to MAC/VLAN filter corruption.
How do I fix CVE-2024-53088?
To fix CVE-2024-53088, users should update the Linux kernel to a patched version that resolves the race condition in the i40e driver.
Which Linux kernel versions are affected by CVE-2024-53088?
CVE-2024-53088 affects Linux kernel versions from 4.10 to 5.15.172, 5.16 to 6.1.117, 6.2 to 6.6.61, 6.7 to 6.11.8, and specific release candidates 6.12-rc1 to 6.12-rc6.
What impact does CVE-2024-53088 have on system security?
The impact of CVE-2024-53088 includes potential information leaks and compromised network integrity due to corrupted MAC/VLAN filters.
Is there a workaround for CVE-2024-53088?
Currently, there is no documented workaround for CVE-2024-53088 other than upgrading to a secure version of the Linux kernel.
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