Issue from cubie/a7a/getting-started/README/访问 /dev/dri/card* 设备严重的内核驱动漏洞

[K0803]

URL: https://docs.radxa.com/cubie/a7a/getting-started

Time: 2/13/2026, 5:52:13 AM

项目 | 内容
设备 | Radxa Cubie A7A
SoC | Allwinner sun60iw2
内核 | 5.15.147-14-a733
崩溃模块 | pvrsrvkm (PowerVR GPU 驱动)
崩溃函数 | pvr_show_fdinfo+0x70/0xa0
触发条件 | 访问 /dev/dri/card* 设备

lsof /dev/dri/card0
lsof /dev/dri/card1
cat /dev/dri/card0
cat /dev/dri/card1
modetest
fuser /dev/dri/*

radxa@radxa-cubie-a7a:~$ sudo lsof /dev/dri/card0
[sudo] radxa 的密码：
[ 133.157189][ T636] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018
[ 133.167828][ T636] Mem abort info:
[ 133.171749][ T636] ESR = 0x0000000096000004
[ 133.176741][ T636] EC = 0x25: DABT (current EL), IL = 32 bits
[ 133.183474][ T636] SET = 0, FnV = 0
[ 133.187779][ T636] EA = 0, S1PTW = 0
[ 133.192135][ T636] FSC = 0x04: level 0 translation fault
[ 133.198384][ T636] Data abort info:
[ 133.202397][ T636] ISV = 0, ISS = 0x00000004
[ 133.207470][ T636] CM = 0, WnR = 0
[ 133.211574][ T636] user pgtable: 4k pages, 48-bit VAs, pgdp=00000001071fd000
[ 133.219574][ T636] [0000000000000018] pgd=0000000000000000, p4d=0000000000000000
[ 133.227967][ T636] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP