CVE-2019-16230

Published: 11 September 2019

** DISPUTED ** drivers/gpu/drm/radeon/radeon_display.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference. NOTE: A third-party software maintainer states that the work queue allocation is happening during device initialization, which for a graphics card occurs during boot. It is not attacker controllable and OOM at that time is highly unlikely.

From the Ubuntu security team

It was discovered that the Radeon Linux kernel driver for AMD GPU devices did not properly check for errors in certain situations, leading to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service.

Priority

Negligible

CVSS 3 base score: 4.7

Status

Package Release Status
linux-oem-5.6
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linux-bluefield
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linux
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(3.11.0-12.19)
Patches:
Introduced by fa7f517cb26eb1a1a1f0baffcced39f6c3ec3337
Fixed by -
linux-hwe
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linux-oem
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linux-kvm
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linux-aws-5.0
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linux-aws-hwe
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linux-azure
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linux-azure-edge
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linux-gcp
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linux-gcp-edge
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linux-gke-4.15
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linux-gke-5.0
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linux-oracle-5.0
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Notes

AuthorNote
sbeattie
as of 2020.05.24, still unfixed upstream, mistakenly
believed to be addressed by the fix for CVE-2019-16229
it's possible this was introduced in
a37cfa8be20c5571ca82fac38441592040a2d071
issue can only occur on device initialization, which is
usually during boot and not attacker controllable
sbeattie
the linux-kernel-tracker lists 81de29d842ccb776c0f77aa3e2b11b07fff0c0e2 as the fix, but that is actually the fix for CVE-2019-16229

References