Bug 1176811 - (CVE-2020-25743) VUL-1: CVE-2020-25743: kvm,qemu: ide: null pointer dereference while cancelling i/o operation
VUL-1: CVE-2020-25743: kvm,qemu: ide: null pointer dereference while cancelli...
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
Other Other
: P4 - Low : Normal
: ---
Assigned To: E-mail List
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Depends on:
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Reported: 2020-09-22 13:08 UTC by Wolfgang Frisch
Modified: 2023-03-08 04:22 UTC (History)
5 users (show)

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Found By: Security Response Team
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Description Wolfgang Frisch 2020-09-22 13:08:48 UTC

A null pointer dereference issue was found in the IDE disk emulator of QEMU. It could occur while cancelling an i/o operation via ide_cancel_dma_sync() routine, if a block drive pointer is null. A guest may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Comment 1 Wolfgang Frisch 2020-09-22 15:06:34 UTC
SUSE:SLE-11:Update      qemu  Not affected [1]
SUSE:SLE-11-SP1:Update  kvm   Not affected [1]
SUSE:SLE-11-SP3:Update  kvm   Not affected [1]
SUSE:SLE-11-SP4:Update  kvm   Not affected [1]
SUSE:SLE-12-SP2:Update  qemu  Affected
SUSE:SLE-12-SP3:Update  qemu  Affected
SUSE:SLE-12-SP4:Update  qemu  Affected
SUSE:SLE-12-SP5:Update  qemu  Affected
SUSE:SLE-15:Update      qemu  Affected
SUSE:SLE-15-SP1:Update  qemu  Affected
SUSE:SLE-15-SP2:Update  qemu  Affected

[1] Not reproducible.
Comment 2 Gianluca Gabrielli 2021-04-02 11:45:26 UTC
Hi team, do you have any update on this?
Comment 3 José Ricardo Ziviani 2021-05-25 20:06:53 UTC
(In reply to Gianluca Gabrielli from comment #2)
> Hi team, do you have any update on this?

The patch[1] hasn't have any update since Sep 30, 2020. I'll monitor it.
Comment 7 Dario Faggioli 2023-03-08 00:48:07 UTC
The patch mentioned in the thread has gone nowhere close to upstream... Should we just drop the ball on this?