In the Linux kernel, the following vulnerability has been resolved:
scsi: qla1280: Fix kernel oops when debug level > 2
A null dereference or oops exception will eventually occur when qla1280.c
driver is compiled with DEBUGQLA1280 enabled and qldebuglevel > 2. I
think its clear from the code that the intention here is sgdmalen(s) not
length of sgnext(s) when printing the debug info.
CVE-2025-21957 is considered a high-severity vulnerability due to its potential to cause a kernel oops or null dereference.
2
How do I fix CVE-2025-21957?
To mitigate CVE-2025-21957, users should disable DEBUG_QLA1280 or lower the ql_debug_level to 2 or below.
3
What is the impact of CVE-2025-21957 on Linux kernel functionality?
CVE-2025-21957 can lead to instability in the Linux kernel, causing crashes or unexpected behavior when the qla1280 driver is used.
4
Which versions of the Linux kernel are affected by CVE-2025-21957?
CVE-2025-21957 affects Linux kernels where the qla1280 driver is compiled with debug options enabled.
5
What is the nature of the vulnerability in CVE-2025-21957?
The nature of the vulnerability in CVE-2025-21957 involves a null dereference error occurring when specific debug levels are set in the qla1280 driver.
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