CVE-2019-19065

MEDIUM
4.7
CVSS Score
Published: November 18, 2019 at 05:24 AM UTC
Updated: June 17, 2026 at 02:26 AM UTC
3 products affected across 3 vendorsLinux KernelUbuntu LinuxLeap

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures, aka CID-34b3be18a04e. NOTE: This has been disputed as not a vulnerability because "rhashtable_init() can only fail if it is passed invalid values in the second parameter's struct, but when invoked from sdma_init() that is a pointer to a static const struct, so an attacker could only trigger failure if they could corrupt kernel memory (in which case a small memory leak is not a significant problem).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.3.9
Affected range stops below 5.3.9, so it looks safe — our inference, not a vendor statement

References (7)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
x_refsource_MISCRelease NotesVendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/4208-1/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/4210-1/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/4226-1/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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