CVE-2025-71238

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

scsi: qla2xxx: Fix bsg_done() causing double free

Kernel panic observed on system,

[5353358.825191] BUG: unable to handle page fault for address: ff5f5e897b024000

[5353358.825194] #PF: supervisor write access in kernel mode

[5353358.825195] #PF: error_code(0x0002) - not-present page

[5353358.825196] PGD 100006067 P4D 0

[5353358.825198] Oops: 0002 [#1] PREEMPT SMP NOPTI

[5353358.825200] CPU: 5 PID: 2132085 Comm: qlafwupdate.sub Kdump: loaded Tainted: G W L ------- --- 5.14.0-503.34.1.el9_5.x86_64 #1

[5353358.825203] Hardware name: HPE ProLiant DL360 Gen11/ProLiant DL360 Gen11, BIOS 2.44 01/17/2025

[5353358.825204] RIP: 0010:memcpy_erms+0x6/0x10

[5353358.825211] RSP: 0018:ff591da8f4f6b710 EFLAGS: 00010246

[5353358.825212] RAX: ff5f5e897b024000 RBX: 0000000000007090 RCX: 0000000000001000

[5353358.825213] RDX: 0000000000001000 RSI: ff591da8f4fed090 RDI: ff5f5e897b024000

[5353358.825214] RBP: 0000000000010000 R08: ff5f5e897b024000 R09: 0000000000000000

[5353358.825215] R10: ff46cf8c40517000 R11: 0000000000000001 R12: 0000000000008090

[5353358.825216] R13: ff591da8f4f6b720 R14: 0000000000001000 R15: 0000000000000000

[5353358.825218] FS: 00007f1e88d47740(0000) GS:ff46cf935f940000(0000) knlGS:0000000000000000

[5353358.825219] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

[5353358.825220] CR2: ff5f5e897b024000 CR3: 0000000231532004 CR4: 0000000000771ef0

[5353358.825221] PKRU: 55555554

[5353358.825222] Call Trace:

[5353358.825223] <TASK>

[5353358.825224] ? show_trace_log_lvl+0x1c4/0x2df

[5353358.825229] ? show_trace_log_lvl+0x1c4/0x2df

[5353358.825232] ? sg_copy_buffer+0xc8/0x110

[5353358.825236] ? __die_body.cold+0x8/0xd

[5353358.825238] ? page_fault_oops+0x134/0x170

[5353358.825242] ? kernelmode_fixup_or_oops+0x84/0x110

[5353358.825244] ? exc_page_fault+0xa8/0x150

[5353358.825247] ? asm_exc_page_fault+0x22/0x30

[5353358.825252] ? memcpy_erms+0x6/0x10

[5353358.825253] sg_copy_buffer+0xc8/0x110

[5353358.825259] qla2x00_process_vendor_specific+0x652/0x1320 [qla2xxx]

[5353358.825317] qla24xx_bsg_request+0x1b2/0x2d0 [qla2xxx]

Most routines in qla_bsg.c call bsg_done() only for success cases.

However a few invoke it for failure case as well leading to a double

free. Validate before calling bsg_done().