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crt: fix potential bug in designated initializers with union members

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John Törnblom committed 2026-08-02 16:08:19 +02:00
1 parent a0d2bc60bd
commit a9e742489a
1 file changed
+10 -10
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crt/kernel.c
+10 -10
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@@ -502,9 +502,7 @@ __kernel_init(payload_args_t* args) {
**/
static int
kernel_write(unsigned long kaddr, void* data, unsigned long len) {
kernel_pipebuf_t buf = {
.vbuf.kaddr = kaddr
};
kernel_pipebuf_t buf = {0};
// sanity check for invalid kernel pointers
if(!(kaddr & 0xffff000000000000)) {
@@ -512,6 +510,8 @@ kernel_write(unsigned long kaddr, void* data, unsigned long len) {
return -1;
}
buf.vbuf.kaddr = kaddr;
if(__crt_syscall(SYS_setsockopt, MASTER_SOCK, IPPROTO_IPV6, IPV6_PKTINFO,
&buf, sizeof(buf))) {
return -1;
@@ -528,15 +528,15 @@ kernel_write(unsigned long kaddr, void* data, unsigned long len) {
int
kernel_copyin(const void *uaddr, unsigned long kaddr, unsigned long len) {
kernel_pipebuf_t buf = {
.flags.reserved = 0x40000000
};
kernel_pipebuf_t buf = {0};
if(!kaddr || !uaddr || !len) {
SET_ERRNO(EINVAL);
return -1;
}
buf.flags.reserved = 0x40000000;
if(kernel_write(pipe_addr, &buf, sizeof(buf))) {
return -1;
}
@@ -559,16 +559,16 @@ kernel_copyin(const void *uaddr, unsigned long kaddr, unsigned long len) {
int
kernel_copyout(unsigned long kaddr, void *uaddr, unsigned long len) {
kernel_pipebuf_t buf = {
.flags.cnt = 0x40000000,
.flags.in = 0x40000000,
};
kernel_pipebuf_t buf = {0};
if(!kaddr || !uaddr || !len) {
SET_ERRNO(EINVAL);
return -1;
}
buf.flags.cnt = 0x40000000;
buf.flags.in = 0x40000000;
if(kernel_write(pipe_addr, &buf, sizeof(buf))) {
return -1;
}