** Also affects: linux-bluefield (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu)
Status: New => Invalid
** Changed in: linux-bluefield (Ubuntu Jammy)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/2028309
Title:
mlxbf-bootctl: Fix kernel panic due to buffer overflow
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Jammy:
Fix Committed
Bug description:
SRU Justification:
[Impact]
Running the following LTP (linux-test-project) script, causes
a kernel panic and a reboot of the DPU:
ltp/testcases/bin/read_all -d /sys -q -r 10
The above test reads all directory and files under /sys.
Reading the sysfs entry "large_icm" causes the kernel panic
due to a garbage value returned via i2c read. That garbage
value causes a buffer overflow in sprintf.
[Fix]
* Replace sprintf with snprintf. And also add missing lock and
increase the buffer size to PAGE_SIZE.
[Test Case]
* Run from linux:
ltp/testcases/bin/read_all -d /sys -q -r 10
[Regression Potential]
no known regression
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