CVE-2023-1390

HIGH

7.5

CVSS Score

Published: March 16, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:27 AM UTC

2 products affected across 2 vendorsLinux KernelKernel

Using Linux kernel (TIPC kernel module) by N/A?

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Severity

HIGH7.5

Exploit prediction

EPSS 5%

SSVC

No known exploit

Description

A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100%, causing a denial of service condition.

Affected

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

Linux Kernel · Linux

95%

4.10 ≤ v < 4.14.2174.15 ≤ v < 4.19.1704.20 ≤ v < 5.4.924.3 ≤ v < 4.9.2535.5 ≤ v < 5.10.105.11 rc1 5.11 rc2 5.11 rc3

Affected range stops below 4.14.217, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.19.170, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.253, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.10.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.92, so it looks safe — our inference, not a vendor statement

Kernel · Red Hat

60%

All versions

Vendor states this is fixed in 5.11-rc4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6

References (4)

Third Party Advisory

Source: [email protected]

https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5

PatchVendor Advisory

Source: [email protected]

https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6

Source: [email protected]

https://infosec.exchange/%40_mattata/109427999461122360

Third Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20230420-0001/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-1050NVD-CWE-Other

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