Bug 836128 – <app-emulation/libvirt-8.2.0: unprivileged daemon DoS

• Status: IN_PROGRESS
• Product: Gentoo Security

[Description John Helmert III 2022-03-26 05:11:33 UTC]

CVE-2022-0897:

A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the `driver->nwfilters` mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the `driver->nwfilters` object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt’s API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

[Comment 1 Larry the Git Cow 2022-04-03 04:36:04 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f80abc70fa18166129b827b6ed4c671cb5c656b0

commit f80abc70fa18166129b827b6ed4c671cb5c656b0
Author:     Sam James <[e-mail]>
AuthorDate: 2022-04-03 04:04:09 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2022-04-03 04:35:37 +0000

    app-emulation/libvirt: add 8.2.0
    
    * Add 8.2.0
    * Tighten up some lower bounds on dependencies
    * Add shorewall to init script 'after'
    
    Bug: https://bugs.gentoo.org/836128
    Closes: https://bugs.gentoo.org/833754
    Closes: https://bugs.gentoo.org/831121
    Signed-off-by: Sam James <[e-mail]>

 app-emulation/libvirt/Manifest                |   2 +
 app-emulation/libvirt/files/libvirtd.init-r19 |   2 +-
 app-emulation/libvirt/libvirt-8.2.0.ebuild    | 336 ++++++++++++++++++++++++++
 app-emulation/libvirt/libvirt-9999.ebuild     |  52 ++--
 app-emulation/libvirt/metadata.xml            |   4 +
 5 files changed, 368 insertions(+), 28 deletions(-)

[Comment 2 John Helmert III 2022-10-14 03:24:45 UTC]

GLSA request filed

[Comment 3 Larry the Git Cow 2022-10-16 14:46:10 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=48e6804ed5fa75343b7496c1033000fda3741b42

commit 48e6804ed5fa75343b7496c1033000fda3741b42
Author:     GLSAMaker <[e-mail]>
AuthorDate: 2022-10-16 14:42:10 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2022-10-16 14:45:24 +0000

    [ GLSA 202210-06 ] libvirt: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/746119
    Bug: https://bugs.gentoo.org/799713
    Bug: https://bugs.gentoo.org/812317
    Bug: https://bugs.gentoo.org/836128
    Signed-off-by: GLSAMaker <[e-mail]>
    Signed-off-by: John Helmert III <[e-mail]>

 glsa-202210-06.xml | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

[Comment 4 John Helmert III 2022-10-16 15:14:11 UTC]

Michal, tamiko, any reason to keep old libvirts around here?