* [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver @ 2022-04-03 9:52 Yuval Shaia 2022-04-05 10:31 ` Marcel Apfelbaum 2022-09-12 17:45 ` Michael Tokarev 0 siblings, 2 replies; 10+ messages in thread From: Yuval Shaia @ 2022-04-03 9:52 UTC (permalink / raw) To: qemu-devel, yuval.shaia.ml, marcel.apfelbaum, mcascell, wxhusst Guest driver might execute HW commands when shared buffers are not yet allocated. This could happen on purpose (malicious guest) or because of some other guest/host address mapping error. We need to protect againts such case. Fixes: CVE-2022-1050 Reported-by: Raven <wxhusst@gmail.com> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> --- v1 -> v2: * Commit message changes v2 -> v3: * Exclude cosmetic changes --- hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c index da7ddfa548..89db963c46 100644 --- a/hw/rdma/vmw/pvrdma_cmd.c +++ b/hw/rdma/vmw/pvrdma_cmd.c @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) dsr_info = &dev->dsr_info; + if (!dsr_info->dsr) { + /* Buggy or malicious guest driver */ + rdma_error_report("Exec command without dsr, req or rsp buffers"); + goto out; + } + if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / sizeof(struct cmd_handler)) { rdma_error_report("Unsupported command"); -- 2.20.1 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-04-03 9:52 [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver Yuval Shaia @ 2022-04-05 10:31 ` Marcel Apfelbaum 2022-12-07 15:05 ` Claudio Fontana 2022-09-12 17:45 ` Michael Tokarev 1 sibling, 1 reply; 10+ messages in thread From: Marcel Apfelbaum @ 2022-04-05 10:31 UTC (permalink / raw) To: Yuval Shaia, Philippe Mathieu-Daudé, Peter Maydell Cc: wxhusst, Mauro Matteo Cascella, qemu devel list Hi Yuval, Thank you for the changes. On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: > > Guest driver might execute HW commands when shared buffers are not yet > allocated. > This could happen on purpose (malicious guest) or because of some other > guest/host address mapping error. > We need to protect againts such case. > > Fixes: CVE-2022-1050 > > Reported-by: Raven <wxhusst@gmail.com> > Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> > --- > v1 -> v2: > * Commit message changes > v2 -> v3: > * Exclude cosmetic changes > --- > hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c > index da7ddfa548..89db963c46 100644 > --- a/hw/rdma/vmw/pvrdma_cmd.c > +++ b/hw/rdma/vmw/pvrdma_cmd.c > @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) > > dsr_info = &dev->dsr_info; > > + if (!dsr_info->dsr) { > + /* Buggy or malicious guest driver */ > + rdma_error_report("Exec command without dsr, req or rsp buffers"); > + goto out; > + } > + > if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / > sizeof(struct cmd_handler)) { > rdma_error_report("Unsupported command"); > -- > 2.20.1 > cc-ing Peter and Philippe for a question: Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will have to wait a week or so. Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Thanks, Marcel ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-04-05 10:31 ` Marcel Apfelbaum @ 2022-12-07 15:05 ` Claudio Fontana 2022-12-19 9:57 ` Yuval Shaia 0 siblings, 1 reply; 10+ messages in thread From: Claudio Fontana @ 2022-12-07 15:05 UTC (permalink / raw) To: Marcel Apfelbaum, Yuval Shaia, Philippe Mathieu-Daudé, Peter Maydell, Peter Maydell Cc: wxhusst, Mauro Matteo Cascella, qemu devel list On 4/5/22 12:31, Marcel Apfelbaum wrote: > Hi Yuval, > Thank you for the changes. > > On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >> >> Guest driver might execute HW commands when shared buffers are not yet >> allocated. >> This could happen on purpose (malicious guest) or because of some other >> guest/host address mapping error. >> We need to protect againts such case. >> >> Fixes: CVE-2022-1050 >> >> Reported-by: Raven <wxhusst@gmail.com> >> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> >> --- >> v1 -> v2: >> * Commit message changes >> v2 -> v3: >> * Exclude cosmetic changes >> --- >> hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c >> index da7ddfa548..89db963c46 100644 >> --- a/hw/rdma/vmw/pvrdma_cmd.c >> +++ b/hw/rdma/vmw/pvrdma_cmd.c >> @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) >> >> dsr_info = &dev->dsr_info; >> >> + if (!dsr_info->dsr) { >> + /* Buggy or malicious guest driver */ >> + rdma_error_report("Exec command without dsr, req or rsp buffers"); >> + goto out; >> + } >> + >> if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / >> sizeof(struct cmd_handler)) { >> rdma_error_report("Unsupported command"); >> -- >> 2.20.1 >> > > cc-ing Peter and Philippe for a question: > Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will > have to wait a week or so. > > Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> > Thanks, > Marcel > Hi all, patch is reviewed, anything holding back the inclusion of this security fix? Thanks, Claudio ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-12-07 15:05 ` Claudio Fontana @ 2022-12-19 9:57 ` Yuval Shaia 2022-12-19 11:21 ` Marcel Apfelbaum 0 siblings, 1 reply; 10+ messages in thread From: Yuval Shaia @ 2022-12-19 9:57 UTC (permalink / raw) To: Claudio Fontana Cc: Marcel Apfelbaum, Philippe Mathieu-Daudé, Peter Maydell, wxhusst, Mauro Matteo Cascella, qemu devel list [-- Attachment #1: Type: text/plain, Size: 1986 bytes --] Can anyone else pick this one? Thanks, Yuval On Wed, 7 Dec 2022 at 17:05, Claudio Fontana <cfontana@suse.de> wrote: > On 4/5/22 12:31, Marcel Apfelbaum wrote: > > Hi Yuval, > > Thank you for the changes. > > > > On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> > wrote: > >> > >> Guest driver might execute HW commands when shared buffers are not yet > >> allocated. > >> This could happen on purpose (malicious guest) or because of some other > >> guest/host address mapping error. > >> We need to protect againts such case. > >> > >> Fixes: CVE-2022-1050 > >> > >> Reported-by: Raven <wxhusst@gmail.com> > >> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> > >> --- > >> v1 -> v2: > >> * Commit message changes > >> v2 -> v3: > >> * Exclude cosmetic changes > >> --- > >> hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ > >> 1 file changed, 6 insertions(+) > >> > >> diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c > >> index da7ddfa548..89db963c46 100644 > >> --- a/hw/rdma/vmw/pvrdma_cmd.c > >> +++ b/hw/rdma/vmw/pvrdma_cmd.c > >> @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) > >> > >> dsr_info = &dev->dsr_info; > >> > >> + if (!dsr_info->dsr) { > >> + /* Buggy or malicious guest driver */ > >> + rdma_error_report("Exec command without dsr, req or rsp > buffers"); > >> + goto out; > >> + } > >> + > >> if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / > >> sizeof(struct cmd_handler)) { > >> rdma_error_report("Unsupported command"); > >> -- > >> 2.20.1 > >> > > > > cc-ing Peter and Philippe for a question: > > Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will > > have to wait a week or so. > > > > Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> > > Thanks, > > Marcel > > > > Hi all, > > patch is reviewed, anything holding back the inclusion of this security > fix? > > Thanks, > > Claudio > [-- Attachment #2: Type: text/html, Size: 3150 bytes --] ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-12-19 9:57 ` Yuval Shaia @ 2022-12-19 11:21 ` Marcel Apfelbaum 2022-12-28 19:32 ` Thomas Huth 0 siblings, 1 reply; 10+ messages in thread From: Marcel Apfelbaum @ 2022-12-19 11:21 UTC (permalink / raw) To: Yuval Shaia, Philippe Mathieu-Daudé, Thomas Huth Cc: Claudio Fontana, qemu devel list, Peter Maydell, wxhusst On Mon, Dec 19, 2022 at 10:57 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: > > Can anyone else pick this one? Adding Thomas, I dropped the ball with this one, I am sorry about that, maybe it doesn't worth a Pull Request only for it. Maybe it can go through the Misc tree? Thank you, Marcel > > Thanks, > Yuval > > On Wed, 7 Dec 2022 at 17:05, Claudio Fontana <cfontana@suse.de> wrote: >> >> On 4/5/22 12:31, Marcel Apfelbaum wrote: >> > Hi Yuval, >> > Thank you for the changes. >> > >> > On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >> >> >> >> Guest driver might execute HW commands when shared buffers are not yet >> >> allocated. >> >> This could happen on purpose (malicious guest) or because of some other >> >> guest/host address mapping error. >> >> We need to protect againts such case. >> >> >> >> Fixes: CVE-2022-1050 >> >> >> >> Reported-by: Raven <wxhusst@gmail.com> >> >> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> >> >> --- >> >> v1 -> v2: >> >> * Commit message changes >> >> v2 -> v3: >> >> * Exclude cosmetic changes >> >> --- >> >> hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ >> >> 1 file changed, 6 insertions(+) >> >> >> >> diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c >> >> index da7ddfa548..89db963c46 100644 >> >> --- a/hw/rdma/vmw/pvrdma_cmd.c >> >> +++ b/hw/rdma/vmw/pvrdma_cmd.c >> >> @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) >> >> >> >> dsr_info = &dev->dsr_info; >> >> >> >> + if (!dsr_info->dsr) { >> >> + /* Buggy or malicious guest driver */ >> >> + rdma_error_report("Exec command without dsr, req or rsp buffers"); >> >> + goto out; >> >> + } >> >> + >> >> if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / >> >> sizeof(struct cmd_handler)) { >> >> rdma_error_report("Unsupported command"); >> >> -- >> >> 2.20.1 >> >> >> > >> > cc-ing Peter and Philippe for a question: >> > Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will >> > have to wait a week or so. >> > >> > Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> >> > Thanks, >> > Marcel >> > >> >> Hi all, >> >> patch is reviewed, anything holding back the inclusion of this security fix? >> >> Thanks, >> >> Claudio ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-12-19 11:21 ` Marcel Apfelbaum @ 2022-12-28 19:32 ` Thomas Huth 2023-01-16 17:50 ` Laurent Vivier 0 siblings, 1 reply; 10+ messages in thread From: Thomas Huth @ 2022-12-28 19:32 UTC (permalink / raw) To: Marcel Apfelbaum, Yuval Shaia, Philippe Mathieu-Daudé, QEMU Trivial Cc: Claudio Fontana, qemu devel list, Peter Maydell, wxhusst, Paolo Bonzini On 19/12/2022 12.21, Marcel Apfelbaum wrote: > On Mon, Dec 19, 2022 at 10:57 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >> >> Can anyone else pick this one? > > Adding Thomas, > > I dropped the ball with this one, I am sorry about that, maybe it > doesn't worth a Pull Request only for it. Why not? Pull request for single patches aren't that uncommon. > Maybe it can go through the Misc tree? hw/rdma/ is really not my turf, but since the patch is small, it sounds like a good candidate for qemu-trivial, I think. Thomas >> On Wed, 7 Dec 2022 at 17:05, Claudio Fontana <cfontana@suse.de> wrote: >>> >>> On 4/5/22 12:31, Marcel Apfelbaum wrote: >>>> Hi Yuval, >>>> Thank you for the changes. >>>> >>>> On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >>>>> >>>>> Guest driver might execute HW commands when shared buffers are not yet >>>>> allocated. >>>>> This could happen on purpose (malicious guest) or because of some other >>>>> guest/host address mapping error. >>>>> We need to protect againts such case. >>>>> >>>>> Fixes: CVE-2022-1050 >>>>> >>>>> Reported-by: Raven <wxhusst@gmail.com> >>>>> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> >>>>> --- >>>>> v1 -> v2: >>>>> * Commit message changes >>>>> v2 -> v3: >>>>> * Exclude cosmetic changes >>>>> --- >>>>> hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ >>>>> 1 file changed, 6 insertions(+) >>>>> >>>>> diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c >>>>> index da7ddfa548..89db963c46 100644 >>>>> --- a/hw/rdma/vmw/pvrdma_cmd.c >>>>> +++ b/hw/rdma/vmw/pvrdma_cmd.c >>>>> @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) >>>>> >>>>> dsr_info = &dev->dsr_info; >>>>> >>>>> + if (!dsr_info->dsr) { >>>>> + /* Buggy or malicious guest driver */ >>>>> + rdma_error_report("Exec command without dsr, req or rsp buffers"); >>>>> + goto out; >>>>> + } >>>>> + >>>>> if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / >>>>> sizeof(struct cmd_handler)) { >>>>> rdma_error_report("Unsupported command"); >>>>> -- >>>>> 2.20.1 >>>>> >>>> >>>> cc-ing Peter and Philippe for a question: >>>> Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will >>>> have to wait a week or so. >>>> >>>> Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> >>>> Thanks, >>>> Marcel >>>> >>> >>> Hi all, >>> >>> patch is reviewed, anything holding back the inclusion of this security fix? >>> >>> Thanks, >>> >>> Claudio > ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-12-28 19:32 ` Thomas Huth @ 2023-01-16 17:50 ` Laurent Vivier 2023-05-15 16:08 ` Michael Tokarev [not found] ` <147b4e5e-009a-7ab8-7dfc-ea7735319c97@tls.msk.ru> 0 siblings, 2 replies; 10+ messages in thread From: Laurent Vivier @ 2023-01-16 17:50 UTC (permalink / raw) To: Thomas Huth, Marcel Apfelbaum, Yuval Shaia, Philippe Mathieu-Daudé, QEMU Trivial Cc: Claudio Fontana, qemu devel list, Peter Maydell, wxhusst, Paolo Bonzini Le 28/12/2022 à 20:32, Thomas Huth a écrit : > On 19/12/2022 12.21, Marcel Apfelbaum wrote: >> On Mon, Dec 19, 2022 at 10:57 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >>> >>> Can anyone else pick this one? >> >> Adding Thomas, >> >> I dropped the ball with this one, I am sorry about that, maybe it >> doesn't worth a Pull Request only for it. > > Why not? Pull request for single patches aren't that uncommon. > >> Maybe it can go through the Misc tree? > > hw/rdma/ is really not my turf, but since the patch is small, it sounds like a good candidate for > qemu-trivial, I think. Applied to my trivial-patches branch. Thanks, Laurent > > Thomas > > >>> On Wed, 7 Dec 2022 at 17:05, Claudio Fontana <cfontana@suse.de> wrote: >>>> >>>> On 4/5/22 12:31, Marcel Apfelbaum wrote: >>>>> Hi Yuval, >>>>> Thank you for the changes. >>>>> >>>>> On Sun, Apr 3, 2022 at 11:54 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >>>>>> >>>>>> Guest driver might execute HW commands when shared buffers are not yet >>>>>> allocated. >>>>>> This could happen on purpose (malicious guest) or because of some other >>>>>> guest/host address mapping error. >>>>>> We need to protect againts such case. >>>>>> >>>>>> Fixes: CVE-2022-1050 >>>>>> >>>>>> Reported-by: Raven <wxhusst@gmail.com> >>>>>> Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> >>>>>> --- >>>>>> v1 -> v2: >>>>>> * Commit message changes >>>>>> v2 -> v3: >>>>>> * Exclude cosmetic changes >>>>>> --- >>>>>> hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ >>>>>> 1 file changed, 6 insertions(+) >>>>>> >>>>>> diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c >>>>>> index da7ddfa548..89db963c46 100644 >>>>>> --- a/hw/rdma/vmw/pvrdma_cmd.c >>>>>> +++ b/hw/rdma/vmw/pvrdma_cmd.c >>>>>> @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) >>>>>> >>>>>> dsr_info = &dev->dsr_info; >>>>>> >>>>>> + if (!dsr_info->dsr) { >>>>>> + /* Buggy or malicious guest driver */ >>>>>> + rdma_error_report("Exec command without dsr, req or rsp buffers"); >>>>>> + goto out; >>>>>> + } >>>>>> + >>>>>> if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / >>>>>> sizeof(struct cmd_handler)) { >>>>>> rdma_error_report("Unsupported command"); >>>>>> -- >>>>>> 2.20.1 >>>>>> >>>>> >>>>> cc-ing Peter and Philippe for a question: >>>>> Do we have a "Security Fixes" or a "Misc" subtree? Otherwise it will >>>>> have to wait a week or so. >>>>> >>>>> Reviewed by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> >>>>> Thanks, >>>>> Marcel >>>>> >>>> >>>> Hi all, >>>> >>>> patch is reviewed, anything holding back the inclusion of this security fix? >>>> >>>> Thanks, >>>> >>>> Claudio >> > > ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2023-01-16 17:50 ` Laurent Vivier @ 2023-05-15 16:08 ` Michael Tokarev [not found] ` <147b4e5e-009a-7ab8-7dfc-ea7735319c97@tls.msk.ru> 1 sibling, 0 replies; 10+ messages in thread From: Michael Tokarev @ 2023-05-15 16:08 UTC (permalink / raw) To: Laurent Vivier, Thomas Huth, Marcel Apfelbaum, Yuval Shaia, Philippe Mathieu-Daudé, QEMU Trivial Cc: Claudio Fontana, qemu devel list, Peter Maydell, wxhusst, Paolo Bonzini 16.01.2023 20:50, Laurent Vivier wrote: > Le 28/12/2022 à 20:32, Thomas Huth a écrit : >> On 19/12/2022 12.21, Marcel Apfelbaum wrote: >>> On Mon, Dec 19, 2022 at 10:57 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >>>> >>>> Can anyone else pick this one? >>> >>> Adding Thomas, >>> >>> I dropped the ball with this one, I am sorry about that, maybe it >>> doesn't worth a Pull Request only for it. >> >> Why not? Pull request for single patches aren't that uncommon. >> >>> Maybe it can go through the Misc tree? >> >> hw/rdma/ is really not my turf, but since the patch is small, it sounds like a good candidate for qemu-trivial, I think. > > Applied to my trivial-patches branch. Has it been forgotten again? :) /mjt ^ permalink raw reply [flat|nested] 10+ messages in thread
[parent not found: <147b4e5e-009a-7ab8-7dfc-ea7735319c97@tls.msk.ru>]
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver [not found] ` <147b4e5e-009a-7ab8-7dfc-ea7735319c97@tls.msk.ru> @ 2023-05-15 16:09 ` Michael Tokarev 0 siblings, 0 replies; 10+ messages in thread From: Michael Tokarev @ 2023-05-15 16:09 UTC (permalink / raw) To: Laurent Vivier, Thomas Huth, Marcel Apfelbaum, Yuval Shaia, Philippe Mathieu-Daudé, QEMU Trivial Cc: Claudio Fontana, qemu devel list, Peter Maydell, wxhusst, Paolo Bonzini 15.05.2023 19:08, Michael Tokarev пишет: > 16.01.2023 20:50, Laurent Vivier wrote: >> Le 28/12/2022 à 20:32, Thomas Huth a écrit : >>> On 19/12/2022 12.21, Marcel Apfelbaum wrote: >>>> On Mon, Dec 19, 2022 at 10:57 AM Yuval Shaia <yuval.shaia.ml@gmail.com> wrote: >>>>> >>>>> Can anyone else pick this one? >>>> >>>> Adding Thomas, >>>> >>>> I dropped the ball with this one, I am sorry about that, maybe it >>>> doesn't worth a Pull Request only for it. >>> >>> Why not? Pull request for single patches aren't that uncommon. >>> >>>> Maybe it can go through the Misc tree? >>> >>> hw/rdma/ is really not my turf, but since the patch is small, it sounds like a good candidate for qemu-trivial, I think. >> >> Applied to my trivial-patches branch. > > Has it been forgotten again? :) Ah nope. There are 2 patches with the same subject, always confusing. This one is applied. /mjt ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver 2022-04-03 9:52 [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver Yuval Shaia 2022-04-05 10:31 ` Marcel Apfelbaum @ 2022-09-12 17:45 ` Michael Tokarev 1 sibling, 0 replies; 10+ messages in thread From: Michael Tokarev @ 2022-09-12 17:45 UTC (permalink / raw) To: Yuval Shaia, qemu-devel, marcel.apfelbaum, mcascell, wxhusst Ping? This is from April this year, half a year ago. Can this be applied or? Marcel said it should wait a week or two, I think that's been done already.. ;) Thanks, /mjt 03.04.2022 12:52, Yuval Shaia wrote: > Guest driver might execute HW commands when shared buffers are not yet > allocated. > This could happen on purpose (malicious guest) or because of some other > guest/host address mapping error. > We need to protect againts such case. > > Fixes: CVE-2022-1050 > > Reported-by: Raven <wxhusst@gmail.com> > Signed-off-by: Yuval Shaia <yuval.shaia.ml@gmail.com> > --- > v1 -> v2: > * Commit message changes > v2 -> v3: > * Exclude cosmetic changes > --- > hw/rdma/vmw/pvrdma_cmd.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c > index da7ddfa548..89db963c46 100644 > --- a/hw/rdma/vmw/pvrdma_cmd.c > +++ b/hw/rdma/vmw/pvrdma_cmd.c > @@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev) > > dsr_info = &dev->dsr_info; > > + if (!dsr_info->dsr) { > + /* Buggy or malicious guest driver */ > + rdma_error_report("Exec command without dsr, req or rsp buffers"); > + goto out; > + } > + > if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / > sizeof(struct cmd_handler)) { > rdma_error_report("Unsupported command"); ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2023-05-15 16:10 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-03 9:52 [PATCH v3] hw/pvrdma: Protect against buggy or malicious guest driver Yuval Shaia
2022-04-05 10:31 ` Marcel Apfelbaum
2022-12-07 15:05 ` Claudio Fontana
2022-12-19 9:57 ` Yuval Shaia
2022-12-19 11:21 ` Marcel Apfelbaum
2022-12-28 19:32 ` Thomas Huth
2023-01-16 17:50 ` Laurent Vivier
2023-05-15 16:08 ` Michael Tokarev
[not found] ` <147b4e5e-009a-7ab8-7dfc-ea7735319c97@tls.msk.ru>
2023-05-15 16:09 ` Michael Tokarev
2022-09-12 17:45 ` Michael Tokarev
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