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libgcrypt: Fix Coverity warnings

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Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Vladimir Serbinenko authored and Daniel Kiper committed 2025-07-11 23:12:51 +02:00
1 parent d65810b01c
commit e23704ad48
2 files changed
+53
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grub-core/lib/libgcrypt-patches/03_sexp_free.patch
+35
View File
@@ -0,0 +1,35 @@
sexp: Add missing free on error path
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
diff --git a/grub-core/lib/libgcrypt/src/sexp.c b/grub-core/lib/libgcrypt/src/sexp.c
index d15f1a790..250559f75 100644
--- a/grub-core/lib/libgcrypt-grub/src/sexp.c
+++ b/grub-core/lib/libgcrypt-grub/src/sexp.c
@@ -1157,6 +1157,17 @@ do_vsexp_sscan (gcry_sexp_t *retsexp, size_t *erroff,
} \
} while (0)
+#define MAKE_SPACE_EXTRA_CLEANUP(n, cleanup) do { \
+ gpg_err_code_t _ms_err = make_space (&c, (n)); \
+ if (_ms_err) \
+ { \
+ err = _ms_err; \
+ *erroff = p - buffer; \
+ cleanup; \
+ goto leave; \
+ } \
+ } while (0)
+
/* The STORE_LEN macro is used to store the length N at buffer P. */
#define STORE_LEN(p,n) do { \
DATALEN ashort = (n); \
@@ -1368,7 +1379,7 @@ do_vsexp_sscan (gcry_sexp_t *retsexp, size_t *erroff,
goto leave;
}
- MAKE_SPACE (datalen);
+ MAKE_SPACE_EXTRA_CLEANUP (datalen, xfree (b64buf));
*c.pos++ = ST_DATA;
STORE_LEN (c.pos, datalen);
for (i = 0; i < datalen; i++)