CVE-2022-50185
CVE-2022-50185 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2022-55449
- Weakness: CWE-787
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() The last case label can write two buffers 'mc_reg_address[j]' and 'mc_data[j]' with 'j' offset equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE since there are no checks for this value in both case labels after the last 'j++'. Instead of changing '>' to '>=' there, add the bounds check at the start of the second 'case' (the first one already has it). Also, remove redundant last checks for 'j' index bigger than array size. The expression is always false. Moreover, before or after the patch 'table->last' can be equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE and it seems it can be a valid value. Detected using the static analysis tool - Svace.
Frequently asked questions
- What is CVE-2022-50185?
- In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() The last case label can write two buffers 'mc_reg_address[j]' and 'mc_data[j]' with 'j' offset equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE since there are no checks for this value in both case labels after the last 'j++'. Instead of changing '>' to '>=' there, add the bounds check at the start of the second 'case' (the first one already has it). Also, remove redundant last checks for 'j' index bigger than array size. The expression is always false. Moreover, before or after the patch 'table->last' can be equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE and it seems it can be a valid value. Detected using the static analysis tool - Svace.
- How severe is CVE-2022-50185?
- CVE-2022-50185 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-2022-50185 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-50185?
- CVE-2022-50185 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-50185?
- 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-2022-50185 have an EU (EUVD) identifier?
- Yes. CVE-2022-50185 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-55449.
- When was CVE-2022-50185 published?
- CVE-2022-50185 was published on 2025-06-18 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/136f614931a2bb73616b292cf542da3a18daefd5
- https://git.kernel.org/stable/c/1f341053852be76f82610ce47a505d930512f05c
- https://git.kernel.org/stable/c/782e413e38dffd37cc85b08b1ccb982adb4a93ce
- https://git.kernel.org/stable/c/8508d6d23a247c29792ce2fc0df3f3404d6a6a80
- https://git.kernel.org/stable/c/9faff03617afeced1c4e5daa89e79b3906374342
- https://git.kernel.org/stable/c/db1a9add3f90ff1c641974d5bb910c16b87af4ef
- https://git.kernel.org/stable/c/deb603c5928e546609c0d5798e231d0205748943
- https://git.kernel.org/stable/c/ea73869df6ef386fc0feeb28ff66742ca835b18f
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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