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| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2013-04-03 16:58:16 -0400 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2013-04-05 00:17:35 -0400 |
| commit | 54c7d1f454801d3053b99c16b2a371934deb0219 (patch) | |
| tree | 0c159c24e240e9068730d8b78edc904e14a91d06 /src/libsystemd-id128/sd-id128.c | |
| parent | ff03aed06a42235a87a3d33e7d812be1e9c8161d (diff) | |
sd-id128: check that the kernel is feeding us proper data
The characters are already checked, so we show that
we don't trust the kernel. Make sure we don't overrun
the buffer too.
Diffstat (limited to 'src/libsystemd-id128/sd-id128.c')
| -rw-r--r-- | src/libsystemd-id128/sd-id128.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libsystemd-id128/sd-id128.c b/src/libsystemd-id128/sd-id128.c index 4286ae7d14..68c4987149 100644 --- a/src/libsystemd-id128/sd-id128.c +++ b/src/libsystemd-id128/sd-id128.c @@ -170,6 +170,9 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) { for (j = 0, p = buf; j < 16; j++) { int a, b; + if (p >= buf + k) + return -EIO; + if (*p == '-') p++; |