In the Linux kernel, the following vulnerability has been resolved: net: sparx5: Fix use after free inside sparx5_del_mact_entry Based on the static… (CVE-2024-26856)
A use-after-free vulnerability in the Linux kernel's sparx5 network driver was identified and resolved. The issue involved accessing the vid field of a MAC table entry after the entry had been freed, potentially leading to memory corruption. The fix changes the order of operations to use the vid before freeing the entry.
AI Analysis
Technical Summary
CVE-2024-26856 is a use-after-free vulnerability in the Linux kernel's sparx5 driver. The flaw occurs in the sparx5_del_mact_entry function where the vid field of a MAC table entry is accessed after the entry has been freed via devm_kfree. This improper use-after-free can lead to memory corruption and potentially impact confidentiality, integrity, and availability. The patch corrects this by first using the vid to delete the entry from hardware before freeing the memory.
Potential Impact
The vulnerability has a CVSS 3.1 score of 7.8 (high) with local attack vector, low complexity, requiring low privileges and no user interaction. Successful exploitation can lead to high impact on confidentiality, integrity, and availability of the affected system due to use-after-free memory corruption.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by reordering operations to avoid use-after-free. Users should apply the official Linux kernel updates that include this patch. Since this is not a cloud service, remediation depends on applying the updated kernel version. Patch status is not explicitly confirmed in the provided data; check the vendor or kernel mailing list advisories for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: Fix use after free inside sparx5_del_mact_entry Based on the static… (CVE-2024-26856)
Description
A use-after-free vulnerability in the Linux kernel's sparx5 network driver was identified and resolved. The issue involved accessing the vid field of a MAC table entry after the entry had been freed, potentially leading to memory corruption. The fix changes the order of operations to use the vid before freeing the entry.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-26856 is a use-after-free vulnerability in the Linux kernel's sparx5 driver. The flaw occurs in the sparx5_del_mact_entry function where the vid field of a MAC table entry is accessed after the entry has been freed via devm_kfree. This improper use-after-free can lead to memory corruption and potentially impact confidentiality, integrity, and availability. The patch corrects this by first using the vid to delete the entry from hardware before freeing the memory.
Potential Impact
The vulnerability has a CVSS 3.1 score of 7.8 (high) with local attack vector, low complexity, requiring low privileges and no user interaction. Successful exploitation can lead to high impact on confidentiality, integrity, and availability of the affected system due to use-after-free memory corruption.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by reordering operations to avoid use-after-free. Users should apply the official Linux kernel updates that include this patch. Since this is not a cloud service, remediation depends on applying the updated kernel version. Patch status is not explicitly confirmed in the provided data; check the vendor or kernel mailing list advisories for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-j23x-qww2-jxhh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2024-26856"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a71feebbf8831d539ff12f8
Added to database: 08/04/2026, 15:02:03 UTC
Last enriched: 08/04/2026, 15:19:56 UTC
Last updated: 08/04/2026, 15:21:01 UTC
Views: 4
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