CVE-2025-38094

net: cadence: macb: Fix a possible deadlock in macb_halt_tx.

MEDIUM

5.5

CVSS Score

Published: July 3, 2025 at 07:44 AM UTC

Updated: June 17, 2026 at 09:16 AM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: net: cadence: macb: Fix a possible deadlock in macb_halt_tx. There is a situation where after THALT is set high, TGO stays high as well. Because jiffies are never updated, as we are in a context with interrupts disabled, we never exit that loop and have a deadlock. That deadlock was noticed on a sama5d4 device that stayed locked for days. Use retries instead of jiffies so that the timeout really works and we do not have a deadlock anymore.

Affected

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

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

3.8 ≤ v < 5.10.2383.8 ≤ v < 5.15.1843.8 ≤ v < 6.1.1403.8 ≤ v < 6.12.303.8 ≤ v < 6.14.83.8 ≤ v < 6.153.8 ≤ v < 6.6.925.11 ≤ v < 5.15.1845.16 ≤ v < 6.1.1406.13 ≤ v < 6.14.86.2 ≤ v < 6.6.926.7 ≤ v < 6.12.303.8 6.15 rc1 6.15 rc2 6.15 rc3 6.15 rc4 6.15 rc5 6.15 rc6e86cd53afc5907f7c221b709916e2dd354e14691

Vendor states this is fixed in 0772a608d799ac0d127c0a36047a2725777aba9d (fixed)

Vendor states this is fixed in 1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4 (fixed)

Vendor states this is fixed in 3e64d35475aa21d13dab71da51de51923c1a3a48 (fixed)

Vendor states this is fixed in 64675a9c00443b2e8af42af08c38fc1b78b68ba2 (fixed)

Vendor states this is fixed in 84f98955a9de0e0f591df85aa1a44f3ebcf1cb37 (fixed)

Vendor states this is fixed in aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7 (fixed)

Vendor states this is fixed in c92d6089d8ad7d4d815ebcedee3f3907b539ff1f (fixed)

Vendor states this is fixed in 3.8 (unaffected)

Vendor states this is fixed in 5.10.238 (unaffected)

Vendor states this is fixed in 5.15.184 (unaffected)

Vendor states this is fixed in 6.1.140 (unaffected)

Vendor states this is fixed in 6.12.30 (unaffected)