CVE-2025-38313
CVE-2025-38313 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-20935
- Weakness: CWE-415
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable. In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed. This commit introduces back the following checkpatch warning which is a false-positive. WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);
Frequently asked questions
- What is CVE-2025-38313?
- In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable. In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed. This commit introduces back the following checkpatch warning which is a false-positive. WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);
- How severe is CVE-2025-38313?
- CVE-2025-38313 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-38313 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-38313?
- CVE-2025-38313 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-38313?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-38313 have an EU (EUVD) identifier?
- Yes. CVE-2025-38313 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20935.
- When was CVE-2025-38313 published?
- CVE-2025-38313 was published on 2025-07-10 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e
- https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f
- https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f
- https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9
- https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8
- https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84
- https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695
- https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Affected products (2)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
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