What’s Vulnerable › Vulnerabilities
CVE-2021-47149: net: fujitsu: fix potential null-ptr-deref
- 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: 2024-03-25 · updated 2026-06-17
- Weakness: CWE-476
Description
In the Linux kernel, the following vulnerability has been resolved: net: fujitsu: fix potential null-ptr-deref In fmvj18x_get_hwinfo(), if ioremap fails there will be NULL pointer deref. To fix this, check the return value of ioremap and return -1 to the caller in case of failure.
Affected products
- Linux kernel: before 4.4.271; from 4.5 before 4.9.271; from 4.10 before 4.14.235; from 4.15 before 4.19.193; from 4.20 before 5.4.124; from 5.5 before 5.10.42 — fixed in 4.14.235, 4.19.193, 4.4.271, 4.9.271, 5.10.42, 5.12.9
How to fix
Upgrade to a fixed version: Linux kernel 4.14.235, 4.19.193, 4.4.271, 4.9.271. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/stable/c/22049c3d40f08facd1867548716a484dad6b3251
- https://git.kernel.org/stable/c/52202be1cd996cde6e8969a128dc27ee45a7cb5e
- https://git.kernel.org/stable/c/6dbf1101594f7c76990b63c35b5a40205a914b6b
- https://git.kernel.org/stable/c/71723a796ab7881f491d663c6cd94b29be5fba50
- https://git.kernel.org/stable/c/7883d3895d0fbb0ba9bff0f8665f99974b45210f
- https://git.kernel.org/stable/c/b92170e209f7746ed72eaac98f2c2f4b9af734e6
- https://git.kernel.org/stable/c/c4f1c23edbe921ab2ecd6140d700e756cd44c5f7
- https://git.kernel.org/stable/c/f14bf57a08779a5dee9936f63ada0149ea89c5e6
- https://git.kernel.org/stable/c/22049c3d40f08facd1867548716a484dad6b3251
- https://git.kernel.org/stable/c/52202be1cd996cde6e8969a128dc27ee45a7cb5e
- https://git.kernel.org/stable/c/6dbf1101594f7c76990b63c35b5a40205a914b6b
- https://git.kernel.org/stable/c/71723a796ab7881f491d663c6cd94b29be5fba50
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