[PATCH v2 0/2] net: lwip: Do not write past end of buffer
Andrew Goodbody
andrew.goodbody at linaro.org
Wed Jan 14 16:12:08 CET 2026
Fix some cases where the trailing \0 written by sprintf is not allowed
for in the target buffer resulting in writing past the end of the
buffer.
Signed-off-by: Andrew Goodbody <andrew.goodbody at linaro.org>
---
Changes in v2:
- Address review comments from Michal Simek
- Add a second patch to address some more instances of sprintf writing
past the end of the target buffer found by code inspection while
looking for an issue.
- Link to v1: https://lore.kernel.org/r/20260109-tftp_fix-v1-1-64bd50abc72b@linaro.org
---
Andrew Goodbody (2):
net: lwip: tftp: Do not write past buffer end
net: lwip: dhcp: Do not write past end of buffer
lib/lwip/lwip/src/apps/tftp/tftp.c | 2 +-
net/lwip/dhcp.c | 6 +++---
net/lwip/net-lwip.c | 6 +++---
3 files changed, 7 insertions(+), 7 deletions(-)
---
base-commit: c05dba22f1f2b0b2655ee3971644acf1936cd07a
change-id: 20260109-tftp_fix-3ab9bd66a6ad
Best regards,
--
Andrew Goodbody <andrew.goodbody at linaro.org>
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