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bootctl: safety check for regular file when reading EFI images

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This commit is contained in:
Lennart Poettering 2019-01-28 17:33:08 +01:00
parent 78d5d4ed77
commit c4ba5b516d
1 changed files with 4 additions and 0 deletions
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4
src/boot/bootctl.c
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@ -96,6 +96,10 @@ static int get_file_version(int fd, char **v) {
if (fstat(fd, &st) < 0) if (fstat(fd, &st) < 0)
return log_error_errno(errno, "Failed to stat EFI binary: %m"); return log_error_errno(errno, "Failed to stat EFI binary: %m");
r = stat_verify_regular(&st);
if (r < 0)
return log_error_errno(errno, "EFI binary is not a regular file: %m");
if (st.st_size < 27) { if (st.st_size < 27) {
*v = NULL; *v = NULL;
return 0; return 0;