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no-senders; approved; loop; banned-address; header-match-devel.lists.libvirt.org-0; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Peter Krempa via Devel Reply-To: Peter Krempa X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1788162230865158500 Content-Type: text/plain; charset="utf-8" From: Peter Krempa Signed-off-by: Peter Krempa Reviewed-by: Jiri Denemark --- NEWS.rst | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 829d6eca63..3a847c0107 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -13,6 +13,35 @@ v12.7.0 (unreleased) * **Security** + * CVE-2026-18917: Integer overflow in RPC handler for ``virNodeGetFreePa= ges`` + + The RPC handler for ``virNodeGetFreePages`` didn't properly check for + overflows in multiplication of integers when calculating the amount of + returned data for validation and allocation of the return buffer. + + Specific values could thus pass validation and cause an undersized buf= fer + to be allocated. The hypervisor driver would then fill the undersized = buffer + based on the values prior to multiplication and thus cause a write bey= ond + the end of the allocated buffer. + + This bug can be triggered via a read-only connection. + + * CVE-2026-77158: Double free of disks array in ``qemuAgentGetDisks`` + + The qemu hypervisor driver would double-free the array of parsed disks= , on + error code paths leading to crash of the daemon. The error code path c= ould + be reached when the qemu guest agent provided malformed data as respon= se to + the ``guest-get-disks`` command. + + * CVE-2026-77159: ``chown()`` of swtpm log file follows symlinks + + When starting up a VM with a ``swtpm`` device configured, libvirt + ``chown()``-s the log file of swtpm to the (unprivileged) user/group + running the swtpm process. The problem is that the directory containin= g the + log files is also owned by the same user/group, thus users with access + to that directory could install a symlink to a privileged file that the + libvirt daemon would follow and chown the file pointed to. + * **Removed features** * **New features** @@ -77,6 +106,12 @@ v12.7.0 (unreleased) all datastores to find which one stores disks for the domain. But if a datastore wasn't mounted, then a crash would occur. This is now fixed. + * virsh: Don't crash when certain error messages are printed + + A bug in the error printing function could cause ``virsh`` to crash wh= en + certain errors (e.g. disk not found in ``virsh detach-disk``) were bei= ng + reported. + v12.6.0 (2026-08-03) =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --=20 2.55.0