Auth bypass in Linux Kernel
CVE-2021-28375
An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- git.kernel.org/linus/20c40794eb85ea29852d7bc37c55713802a543d6 (Patch, Mailing List, Vendor Advisory)
- lore.kernel.org/stable/YD03ew7+6v0XPh6l@kroah.com/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.netapp.com/advisory/ntap-20210401-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28375?
- CVE-2021-28375 is a high-severity vulnerability in Linux Kernel, classified under Missing Authorization. CVSS score: 7.8/10. Published 2021-03-15.
- How severe is CVE-2021-28375?
- High severity. CVSS v3 base score is 7.8 out of 10.