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| author | Arjun Shankar <arjun@redhat.com> | 2024-01-15 17:44:44 +0100 |
|---|---|---|
| committer | Arjun Shankar <arjun@redhat.com> | 2024-01-30 15:53:37 +0100 |
| commit | 7e5a0c286da33159d47d0122007aac016f3e02cd (patch) | |
| tree | 5645de1902e9a5f08f889cdfc71adc421972ce2f /stdio-common/vfprintf-internal.c | |
| parent | 6bd0e4efcc78f3c0115e5ea9739a1642807450da (diff) | |
| download | glibc-7e5a0c286da33159d47d0122007aac016f3e02cd.zip glibc-7e5a0c286da33159d47d0122007aac016f3e02cd.tar.gz glibc-7e5a0c286da33159d47d0122007aac016f3e02cd.tar.bz2 | |
syslog: Fix heap buffer overflow in __vsyslog_internal (CVE-2023-6779)
__vsyslog_internal used the return value of snprintf/vsnprintf to
calculate buffer sizes for memory allocation. If these functions (for
any reason) failed and returned -1, the resulting buffer would be too
small to hold output. This commit fixes that.
All snprintf/vsnprintf calls are checked for negative return values and
the function silently returns upon encountering them.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'stdio-common/vfprintf-internal.c')
0 files changed, 0 insertions, 0 deletions