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Xext/xselinux: avoid memory leak in SELinuxAtomToSID()

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Reported in #1817:

xwayland-24.1.6/redhat-linux-build/../Xext/xselinux_label.c:142:13: warning[-Wanalyzer-malloc-leak]: leak of ‘rec’
xwayland-24.1.6/redhat-linux-build/../Xext/xselinux_label.c:133:1: enter_function: entry to ‘SELinuxAtomToSID’
xwayland-24.1.6/redhat-linux-build/../Xext/xselinux_label.c:141:15: acquire_memory: allocated here
xwayland-24.1.6/redhat-linux-build/../Xext/xselinux_label.c:69:12: branch_true: following ‘true’ branch...
xwayland-24.1.6/redhat-linux-build/../Xext/xselinux_label.c:142:13: danger: ‘rec’ leaks here; was allocated at [(2)](sarif:/runs/0/results/0/codeFlows/0/threadFlows/0/locations/1)
#  140|       if (!rec) {
#  141|           rec = calloc(1, sizeof(SELinuxAtomRec));
#  142|->         if (!rec || !SELinuxArraySet(&arr_atoms, atom, rec))
#  143|               return BadAlloc;
#  144|       }

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
(cherry picked from commit 21cbc56c43)

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2076>
This commit is contained in:
Alan Coopersmith 2025-10-04 17:26:47 -07:00 • committed by Olivier Fourdan
parent 161c725991
commit 5b2933abf0
1 changed files with 5 additions and 1 deletions
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6
Xext/xselinux_label.c
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@ -139,8 +139,12 @@ SELinuxAtomToSID(Atom atom, int prop, SELinuxObjectRec ** obj_rtn)
rec = SELinuxArrayGet(&arr_atoms, atom);
if (!rec) {
rec = calloc(1, sizeof(SELinuxAtomRec));
if (!rec || !SELinuxArraySet(&arr_atoms, atom, rec))
if (!rec)
return BadAlloc;
if (!SELinuxArraySet(&arr_atoms, atom, rec)) {
free(rec);
return BadAlloc;
}
}
if (prop) {