Hi Yoann, Thanks for reminding me.
This series CVE's fixed in xserver-xorg 21.1.22. Release Notes: https://lists.x.org/archives/xorg-announce/2026-April/003678.html Already xserver-xorg upgraded to 21.1.22 in master branch. https://git.openembedded.org/openembedded-core/commit/?id=d4452b34849b4f06c979c394dc0c824958243861 I've sent upgrade patch to wrynose branch. Thanks & Regards, Vijay On Tue, Jun 2, 2026 at 6:28 PM Yoann Congal <[email protected]> wrote: > On Tue May 12, 2026 at 10:59 AM CEST, Vijay Anusuri via > lists.openembedded.org wrote: > > Pick patch according to [1] > > > > [1] https://lists.x.org/archives/xorg-announce/2026-April/003677.html > > [2] https://security-tracker.debian.org/tracker/CVE-2026-33999 > > > > Signed-off-by: Vijay Anusuri <[email protected]> > > As far as I can tell, this whole series should also be applied to > wrynose and master. Can you send this to theses branches and ping back > here? > > Thanks! > > > --- > > .../xserver-xorg/CVE-2026-33999.patch | 49 +++++++++++++++++++ > > .../xorg-xserver/xserver-xorg_21.1.18.bb | 1 + > > 2 files changed, 50 insertions(+) > > create mode 100644 > meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2026-33999.patch > > > > diff --git > a/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2026-33999.patch > b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2026-33999.patch > > new file mode 100644 > > index 0000000000..cd3bf47397 > > --- /dev/null > > +++ > b/meta/recipes-graphics/xorg-xserver/xserver-xorg/CVE-2026-33999.patch > > @@ -0,0 +1,49 @@ > > +From b024ae1749ee58c6fbf863b9a1f5dc440fee2e1b Mon Sep 17 00:00:00 2001 > > +From: Peter Harris <[email protected]> > > +Date: Thu, 15 Jan 2026 15:54:09 -0500 > > +Subject: [PATCH] xkb: fix buffer re-use in _XkbSetCompatMap > > + > > +If the "compat" buffer has previously been truncated, there will be > > +unused space in the buffer. The code uses this space, but does not > > +update the number of valid entries in the buffer. > > + > > +In the best case, this leads to the new compat entries being ignored. > In the > > +worst case, if there are any "skipped" compat entries, the number of > > +valid entries will be corrupted, potentially leading to a buffer read > > +overrun when processing a future request. > > + > > +Set the number of used "compat" entries when re-using previously > > +allocated space in the buffer. > > + > > +CVE-2026-33999, ZDI-CAN-28593 > > + > > +This vulnerability was discovered by: > > +Jan-Niklas Sohn working with TrendAI Zero Day Initiative > > + > > +Signed-off-by: Peter Harris <[email protected]> > > +Acked-by: Olivier Fourdan <[email protected]> > > +Part-of: < > https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2176> > > + > > +Upstream-Status: Backport [ > https://gitlab.freedesktop.org/xorg/xserver/-/commit/b024ae1749ee58c6fbf863b9a1f5dc440fee2e1b > ] > > +CVE: CVE-2026-33999 > > +Signed-off-by: Vijay Anusuri <[email protected]> > > +--- > > + xkb/xkb.c | 2 +- > > + 1 file changed, 1 insertion(+), 1 deletion(-) > > + > > +diff --git a/xkb/xkb.c b/xkb/xkb.c > > +index 137d70d..2b9004a 100644 > > +--- a/xkb/xkb.c > > ++++ b/xkb/xkb.c > > +@@ -3004,7 +3004,7 @@ _XkbSetCompatMap(ClientPtr client, DeviceIntPtr > dev, > > + return BadAlloc; > > + } > > + } > > +- else if (req->truncateSI) { > > ++ else if (req->truncateSI || req->firstSI + req->nSI > > compat->num_si) { > > + compat->num_si = req->firstSI + req->nSI; > > + } > > + sym = &compat->sym_interpret[req->firstSI]; > > +-- > > +2.43.0 > > + > > diff --git a/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.18.bb > b/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.18.bb > > index 7f6197a0b4..ef7f5c5bdb 100644 > > --- a/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.18.bb > > +++ b/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.18.bb > > @@ -5,6 +5,7 @@ SRC_URI += > "file://0001-xf86pciBus.c-use-Intel-ddx-only-for-pre-gen4-hardwar.pat > > > file://0002-xkb-Make-the-RT_XKBCLIENT-resource-private.patch \ > > > file://0003-xkb-Free-the-XKB-resource-when-freeing-XkbInterest.patch \ > > file://0004-xkb-Prevent-overflow-in-XkbSetCompatMap.patch \ > > + file://CVE-2026-33999.patch \ > > " > > SRC_URI[sha256sum] = > "c878d1930d87725d4a5bf498c24f4be8130d5b2646a9fd0f2994deff90116352" > > > > > -- > Yoann Congal > Smile ECS > >
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