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| author | Christian Brabandt <cb@256bit.org> | 2023-11-14 21:02:30 +0100 |
|---|---|---|
| committer | Christian Brabandt <cb@256bit.org> | 2023-11-16 22:04:37 +0100 |
| commit | 58f9befca1fa172068effad7f2ea5a9d6a7b0cca (patch) | |
| tree | 8bb272a54db549b297f4c79abd3024850a473809 /src/normal.c | |
| parent | ac63787734fda2e294e477af52b3bd601517fa78 (diff) | |
patch 9.0.2109: [security]: overflow in nv_z_get_countv9.0.2109
Problem: [security]: overflow in nv_z_get_count
Solution: break out, if count is too large
When getting the count for a normal z command, it may overflow for large
counts given. So verify, that we can safely store the result in a long.
Signed-off-by: Christian Brabandt <cb@256bit.org>
Diffstat (limited to 'src/normal.c')
| -rw-r--r-- | src/normal.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/normal.c b/src/normal.c index a06d61e6fc..16b4b45069 100644 --- a/src/normal.c +++ b/src/normal.c @@ -2562,7 +2562,14 @@ nv_z_get_count(cmdarg_T *cap, int *nchar_arg) if (nchar == K_DEL || nchar == K_KDEL) n /= 10; else if (VIM_ISDIGIT(nchar)) + { + if (n > LONG_MAX / 10) + { + clearopbeep(cap->oap); + break; + } n = n * 10 + (nchar - '0'); + } else if (nchar == CAR) { #ifdef FEAT_GUI |