CVE-2025-38387
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-07-25
Last updated on: 2025-12-16
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/mlx5: Initialize obj_event->obj_sub_list before xa_insert
The obj_event may be loaded immediately after inserted, then if the
list_head is not initialized then we may get a poisonous pointer. This
fixes the crash below:
mlx5_core 0000:03:00.0: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0 enhanced)
mlx5_core.sf mlx5_core.sf.4: firmware version: 32.38.3056
mlx5_core 0000:03:00.0 en3f0pf0sf2002: renamed from eth0
mlx5_core.sf mlx5_core.sf.4: Rate limit: 127 rates are supported, range: 0Mbps to 195312Mbps
IPv6: ADDRCONF(NETDEV_CHANGE): en3f0pf0sf2002: link becomes ready
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060
Mem abort info:
ESR = 0x96000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=00000007760fb000
[0000000000000060] pgd=000000076f6d7003, p4d=000000076f6d7003, pud=0000000777841003, pmd=0000000000000000
Internal error: Oops: 96000006 [#1] SMP
Modules linked in: ipmb_host(OE) act_mirred(E) cls_flower(E) sch_ingress(E) mptcp_diag(E) udp_diag(E) raw_diag(E) unix_diag(E) tcp_diag(E) inet_diag(E) binfmt_misc(E) bonding(OE) rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) isofs(E) cdrom(E) mst_pciconf(OE) ib_umad(OE) mlx5_ib(OE) ipmb_dev_int(OE) mlx5_core(OE) kpatch_15237886(OEK) mlxdevm(OE) auxiliary(OE) ib_uverbs(OE) ib_core(OE) psample(E) mlxfw(OE) tls(E) sunrpc(E) vfat(E) fat(E) crct10dif_ce(E) ghash_ce(E) sha1_ce(E) sbsa_gwdt(E) virtio_console(E) ext4(E) mbcache(E) jbd2(E) xfs(E) libcrc32c(E) mmc_block(E) virtio_net(E) net_failover(E) failover(E) sha2_ce(E) sha256_arm64(E) nvme(OE) nvme_core(OE) gpio_mlxbf3(OE) mlx_compat(OE) mlxbf_pmc(OE) i2c_mlxbf(OE) sdhci_of_dwcmshc(OE) pinctrl_mlxbf3(OE) mlxbf_pka(OE) gpio_generic(E) i2c_core(E) mmc_core(E) mlxbf_gige(OE) vitesse(E) pwr_mlxbf(OE) mlxbf_tmfifo(OE) micrel(E) mlxbf_bootctl(OE) virtio_ring(E) virtio(E) ipmi_devintf(E) ipmi_msghandler(E)
[last unloaded: mst_pci]
CPU: 11 PID: 20913 Comm: rte-worker-11 Kdump: loaded Tainted: G OE K 5.10.134-13.1.an8.aarch64 #1
Hardware name: https://www.mellanox.com BlueField-3 SmartNIC Main Card/BlueField-3 SmartNIC Main Card, BIOS 4.2.2.12968 Oct 26 2023
pstate: a0400089 (NzCv daIf +PAN -UAO -TCO BTYPE=--)
pc : dispatch_event_fd+0x68/0x300 [mlx5_ib]
lr : devx_event_notifier+0xcc/0x228 [mlx5_ib]
sp : ffff80001005bcf0
x29: ffff80001005bcf0 x28: 0000000000000001
x27: ffff244e0740a1d8 x26: ffff244e0740a1d0
x25: ffffda56beff5ae0 x24: ffffda56bf911618
x23: ffff244e0596a480 x22: ffff244e0596a480
x21: ffff244d8312ad90 x20: ffff244e0596a480
x19: fffffffffffffff0 x18: 0000000000000000
x17: 0000000000000000 x16: ffffda56be66d620
x15: 0000000000000000 x14: 0000000000000000
x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000040 x10: ffffda56bfcafb50
x9 : ffffda5655c25f2c x8 : 0000000000000010
x7 : 0000000000000000 x6 : ffff24545a2e24b8
x5 : 0000000000000003 x4 : ffff80001005bd28
x3 : 0000000000000000 x2 : 0000000000000000
x1 : ffff244e0596a480 x0 : ffff244d8312ad90
Call trace:
dispatch_event_fd+0x68/0x300 [mlx5_ib]
devx_event_notifier+0xcc/0x228 [mlx5_ib]
atomic_notifier_call_chain+0x58/0x80
mlx5_eq_async_int+0x148/0x2b0 [mlx5_core]
atomic_notifier_call_chain+0x58/0x80
irq_int_handler+0x20/0x30 [mlx5_core]
__handle_irq_event_percpu+0x60/0x220
handle_irq_event_percpu+0x3c/0x90
handle_irq_event+0x58/0x158
handle_fasteoi_irq+0xfc/0x188
generic_handle_irq+0x34/0x48
...
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 5.3 (inc) to 5.4.296 (exc) |
| linux | linux_kernel | From 5.5 (inc) to 5.10.240 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.187 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.144 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.97 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.37 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.15.6 (exc) |
| linux | linux_kernel | 6.16 |
| linux | linux_kernel | 6.16 |
| linux | linux_kernel | 6.16 |
| linux | linux_kernel | 6.16 |
| debian | debian_linux | 11.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in the Linux kernel's RDMA/mlx5 component involves improper initialization of the obj_event->obj_sub_list before it is inserted with xa_insert. If the list_head is not initialized, it may lead to a poisonous pointer being loaded immediately after insertion, causing a kernel crash due to a NULL pointer dereference.
How can this vulnerability impact me? :
This vulnerability can cause the Linux kernel to crash due to a NULL pointer dereference, leading to system instability or denial of service on affected systems using the mlx5 driver for RDMA. This may disrupt network operations and services relying on the affected hardware and software components.
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