Search/CVE-2021-33909
● CVE — High

CVE-2021-33909

Vendordebian, fedoraproject, linux, oracle, netappProductdebian linux, fedora, linux kernel, communications session border controller, solidfire, hci management node, sma1000 firmwareDiscoveredJul 20, 2021UpdatedNov 21, 2024

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

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CVSS v3.1
7.8 HIGH
EPSS
9.73%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
CVSS v3.1 Detail
Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Connections
8 relationships
Timeline
disclosure → media coverage
Jul 20, 2021
Disclosure — published as a CVE record. · last revised by NVD Nov 21, 2024
Public PoC (4)
github.com/Liang2580/CVE-2021-33909github.com/baerwolf/cve-2021-33909github.com/bbinfosec43/CVE-2021-33909github.com/ChrisTheCoolHut/CVE-2021-33909
Unverified third-party code — review before executing.