CVE-2025-68741

Summary

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Fix improper freeing of purex item

In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item().

The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc().

An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption.

Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 8e9f0a0717ba31d5842721627ade1e62d7aec012affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < cfe3e2f768d248fd3d965d561d0768a56dd0b9f8affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 5fa1c8226b4532ad7011d295d3ab4ad45df105aeaffected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 78b1a242fe612a755f2158fd206ee6bb577d18caaffected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.120 <= 6.6.*unaffected
LinuxLinux6.12.63 <= 6.12.*unaffected
LinuxLinux6.17.13 <= 6.17.*unaffected
LinuxLinux6.18.2 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References