CVE-2026-45871
CVE-2026-45871 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32337
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-45871?
- 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.
- How severe is CVE-2026-45871?
- CVE-2026-45871 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-45871 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45871?
- CVE-2026-45871 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45871?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-45871 have an EU (EUVD) identifier?
- Yes. CVE-2026-45871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32337.
- When was CVE-2026-45871 published?
- CVE-2026-45871 was published on 2026-05-27 and last updated on 2026-06-25.
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
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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