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Acknowledged

LIN1023-15424 : Security Advisory - linux - CVE-2025-39857

Created: Sep 21, 2025    Updated: Sep 24, 2025
Found In Version: 10.23.30.1
Severity: Standard
Applicable for: Wind River Linux LTS 23
Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()[EOL][EOL]BUG: kernel NULL pointer dereference, address: 00000000000002ec[EOL]PGD 0 P4D 0[EOL]Oops: Oops: 0000 [#1] SMP PTI[EOL]CPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G        OE       6.17.0-rc2+ #9 NONE[EOL]Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE[EOL]Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014[EOL]Workqueue: smc_hs_wq smc_listen_work [smc][EOL]RIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc][EOL]...[EOL]Call Trace:[EOL] <TASK>[EOL] smcr_buf_map_link+0x211/0x2a0 [smc][EOL] __smc_buf_create+0x522/0x970 [smc][EOL] smc_buf_create+0x3a/0x110 [smc][EOL] smc_find_rdma_v2_device_serv+0x18f/0x240 [smc][EOL] ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc][EOL] smc_listen_find_device+0x1dd/0x2b0 [smc][EOL] smc_listen_work+0x30f/0x580 [smc][EOL] process_one_work+0x18c/0x340[EOL] worker_thread+0x242/0x360[EOL] kthread+0xe7/0x220[EOL] ret_from_fork+0x13a/0x160[EOL] ret_from_fork_asm+0x1a/0x30[EOL] </TASK>[EOL][EOL]If the software RoCE device is used, ibdev->dma_device is a null pointer.[EOL]As a result, the problem occurs. Null pointer detection is added to[EOL]prevent problems.
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