CVE-2024-26856: linux Use After Free
Vulnerability summary
CVE-2024-26856 is a high (CVSS 8.8) Use After Free vulnerability in linux. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 20 · Related 20Timeline
- 17-04-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
0.00 pp
From 0.32% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu104 products
- linux< 5.15.0-112.122
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1063.69
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2, < e46274df1100fb0c06704195bfff5bfbd418bf64 | ≥ b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2, < 0de693d68b0a18d5e256556c7c62d92cca35ad52 | ≥ b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2, < e83bebb718fd1f42549358730e1206164e0861d6 | ≥ b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2, < 71809805b95052ff551922f11660008fb3666025 | ≥ b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2, < 89d72d4125e94aa3c2140fedd97ce07ba9e37674 | 5.14
- linux_kernel≥ 5.14, < 5.15.152 | ≥ 5.16, < 6.1.82 | ≥ 6.2, < 6.6.22 | ≥ 6.7, < 6.7.10 | 6.8:rc1 | 6.8:rc2 | 6.8:rc3 | 6.8:rc4 | 6.8:rc5 | 6.8:rc6
Debian1 product
- linux< 6.1.82-1 | < 6.7.12-1
3 vendors · 107 products
