What’s Vulnerable › Vulnerabilities

CVE-2026-45871: tpm: st33zp24: Fix missing cleanup on get_burstcount() error

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-25

Description

In the Linux kernel, the following vulnerability has been resolved: tpm: st33zp24: Fix missing cleanup on get_burstcount() error get_burstcount() can return -EBUSY on timeout. When this happens, st33zp24_send() returns directly without releasing the locality acquired earlier. Use goto out_err to ensure proper cleanup when get_burstcount() fails.

Affected products

• Linux kernel: from 4.1 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1256c6dc96d1e687e6e9b63088156ed07411b00c
• https://git.kernel.org/stable/c/3e91b44c93ad2871f89fc2a98c5e4fe6ca5db3d9
• https://git.kernel.org/stable/c/4fffb77d35d038f146e6192da583dbe4971d869e
• https://git.kernel.org/stable/c/7687133509cf66ced120b667fefd21f80bf17993
• https://git.kernel.org/stable/c/a51cff9be046e13e1c1b2fe45d5c48b582ec9b8c
• https://git.kernel.org/stable/c/cc09d55f519e15355de343264a22ac6682b8305e
• https://git.kernel.org/stable/c/e0ce3da82341fcd6194175f1837946b2a894c625
• https://git.kernel.org/stable/c/ec15eb67fe9df87981b4829b901ec254273ca483

Get alerted when CVE-2026-45871 or the next vulnerability affects your stack