CVE-2022-50873
Description
In the Linux kernel, the following vulnerability has been resolved: vdpa/vp_vdpa: fix kfree a wrong pointer in vp_vdpa_remove In vp_vdpa_remove(), the code kfree(&vp_vdpa_mgtdev->mgtdev.id_table) uses a reference of pointer as the argument of kfree, which is the wrong pointer and then may hit crash like this: Unable to handle kernel paging request at virtual address 00ffff003363e30c Internal error: Oops: 96000004 [#1] SMP Call trace: rb_next+0x20/0x5c ext4_readdir+0x494/0x5c4 [ext4] iterate_dir+0x168/0x1b4 __se_sys_getdents64+0x68/0x170 __arm64_sys_getdents64+0x24/0x30 el0_svc_common.constprop.0+0x7c/0x1bc do_el0_svc+0x2c/0x94 el0_svc+0x20/0x30 el0_sync_handler+0xb0/0xb4 el0_sync+0x160/0x180 Code: 54000220 f9400441 b4000161 aa0103e0 (f9400821) SMP: stopping secondary CPUs Starting crashdump kernel...
How to fix
- Linux Linux8fe12680b2c731201519935013ec9219c93ec540, 6ccc891f36d0c20ee220551caabdcd3886ec584b, ed843d6ed7310a27cf7c8ee0a82a482eed0cb4a6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | ffbda8e9df10d1784d5427ec199e7d8308e3763f ≤ v < 8fe12680b2c731201519935013ec9219c93ec540, ffbda8e9df10d1784d5427ec199e7d8308e3763f ≤ v < 6ccc891f36d0c20ee220551caabdcd3886ec584b, ffbda8e9df10d1784d5427ec199e7d8308e3763f ≤ v < ed843d6ed7310a27cf7c8ee0a82a482eed0cb4a6, 5.19 | 8fe12680b2c731201519935013ec9219c93ec540, 6ccc891f36d0c20ee220551caabdcd3886ec584b, ed843d6ed7310a27cf7c8ee0a82a482eed0cb4a6 |
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