CVE-2024-26856
Last modified
CVE-2024-26856 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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 analyzis of the code it looks like when an entry from the MAC table was removed, the entry was still used after being freed. More precise the vid of the mac_entry was used after calling devm_kfree on the mac_entry. The fix consists in first using the vid of the mac_entry to delete the entry from the HW and after that to free it.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
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 analyzis of the code it looks like when an entry from the MAC table was removed, the entry was still used after being freed. More precise the vid of the mac_entry was used after calling devm_kfree on the mac_entry. The fix consists in first using the vid of the mac_entry to delete the entry from the HW and after that to free it.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 5.14, < 5.15.152 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.82 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.22 | — |
| Linux | Linux Kernel | >= 6.7, < 6.7.10 | — |
| Linux | Linux Kernel | 6.8 | Rc1 |
References
- https://git.kernel.org/stable/c/0de693d68b0a18d5e256556c7c62d92cca35ad52Mailing List, Patch
- https://git.kernel.org/stable/c/71809805b95052ff551922f11660008fb3666025Mailing List, Patch
- https://git.kernel.org/stable/c/89d72d4125e94aa3c2140fedd97ce07ba9e37674Mailing List, Patch
- https://git.kernel.org/stable/c/e46274df1100fb0c06704195bfff5bfbd418bf64Mailing List, Patch
- https://git.kernel.org/stable/c/e83bebb718fd1f42549358730e1206164e0861d6Mailing List, Patch
- https://git.kernel.org/stable/c/0de693d68b0a18d5e256556c7c62d92cca35ad52Mailing List, Patch
- https://git.kernel.org/stable/c/71809805b95052ff551922f11660008fb3666025Mailing List, Patch
- https://git.kernel.org/stable/c/89d72d4125e94aa3c2140fedd97ce07ba9e37674Mailing List, Patch
- https://git.kernel.org/stable/c/e46274df1100fb0c06704195bfff5bfbd418bf64Mailing List, Patch
- https://git.kernel.org/stable/c/e83bebb718fd1f42549358730e1206164e0861d6Mailing List, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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