摘要:
kernel security update
安全等级: Medium
公告ID: KylinSec-SA-2025-2879
发布日期: 2025年9月15日
关联CVE: CVE-2025-38581
The Linux Kernel, the operating system core itself.
Security Fix(es):
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Fix crash when rebind ccp device for ccp.ko
When CONFIG_CRYPTO_DEV_CCP_DEBUGFS is enabled, rebinding
the ccp device causes the following crash:
$ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/unbind
$ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/bind
[ 204.976930] BUG: kernel NULL pointer dereference, address: 0000000000000098
[ 204.978026] #PF: supervisor write access in kernel mode
[ 204.979126] #PF: error_code(0x0002) - not-present page
[ 204.980226] PGD 0 P4D 0
[ 204.981317] Oops: Oops: 0002 [#1] SMP NOPTI
...
[ 204.997852] Call Trace:
[ 204.999074] <TASK>
[ 205.000297] start_creating+0x9f/0x1c0
[ 205.001533] debugfs_create_dir+0x1f/0x170
[ 205.002769] ? srso_return_thunk+0x5/0x5f
[ 205.004000] ccp5_debugfs_setup+0x87/0x170 [ccp]
[ 205.005241] ccp5_init+0x8b2/0x960 [ccp]
[ 205.006469] ccp_dev_init+0xd4/0x150 [ccp]
[ 205.007709] sp_init+0x5f/0x80 [ccp]
[ 205.008942] sp_pci_probe+0x283/0x2e0 [ccp]
[ 205.010165] ? srso_return_thunk+0x5/0x5f
[ 205.011376] local_pci_probe+0x4f/0xb0
[ 205.012584] pci_device_probe+0xdb/0x230
[ 205.013810] really_probe+0xed/0x380
[ 205.015024] __driver_probe_device+0x7e/0x160
[ 205.016240] device_driver_attach+0x2f/0x60
[ 205.017457] bind_store+0x7c/0xb0
[ 205.018663] drv_attr_store+0x28/0x40
[ 205.019868] sysfs_kf_write+0x5f/0x70
[ 205.021065] kernfs_fop_write_iter+0x145/0x1d0
[ 205.022267] vfs_write+0x308/0x440
[ 205.023453] ksys_write+0x6d/0xe0
[ 205.024616] __x64_sys_write+0x1e/0x30
[ 205.025778] x64_sys_call+0x16ba/0x2150
[ 205.026942] do_syscall_64+0x56/0x1e0
[ 205.028108] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 205.029276] RIP: 0033:0x7fbc36f10104
[ 205.030420] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 e1 08 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89 f5
This patch sets ccp_debugfs_dir to NULL after destroying it in
ccp5_debugfs_destroy, allowing the directory dentry to be
recreated when rebinding the ccp device.
Tested on AMD Ryzen 7 1700X.(CVE-2025-38581)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2025-38581 | KY3.4-5A | kernel | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| bpftool | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-devel | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-source | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-tools | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-tools-devel | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| perf | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| python2-perf | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| python3-perf | x86_64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| bpftool | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-devel | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-source | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-tools | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| kernel-tools-devel | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| perf | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| python2-perf | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
| python3-perf | aarch64 | 4.19.90-2408.1.0.0288.kb28.ky3_4 |
方法一：下载安装包进行升级安装
1、通过下载链接下载需要升级的升级包保存，如 xxx.rpm
2、通过rpm命令升级，如 rpm -Uvh xxx.rpm
方法二：通过软件源进行升级安装
1、保持能够连接上互联网
2、通过yum命令升级指定的包，如 yum install 包名
