CVE-2022-48891

Summary

In the Linux kernel, the following vulnerability has been resolved:

regulator: da9211: Use irq handler when ready

If the system does not come from reset (like when it is kexec()), the regulator might have an IRQ waiting for us.

If we enable the IRQ handler before its structures are ready, we crash.

This patch fixes:

[ 1.141839] Unable to handle kernel read from unreadable memory at virtual address 0000000000000078 [ 1.316096] Call trace: [ 1.316101] blocking_notifier_call_chain+0x20/0xa8 [ 1.322757] cpu cpu0: dummy supplies not allowed for exclusive requests [ 1.327823] regulator_notifier_call_chain+0x1c/0x2c [ 1.327825] da9211_irq_handler+0x68/0xf8 [ 1.327829] irq_thread+0x11c/0x234 [ 1.327833] kthread+0x13c/0x154

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < 1c1afcb8839b91c09d211ea304faa269763b1f91affected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < f75cde714e0a67f73ef169aa50d4ed77d04f7236affected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < d443308edbfb6e9e757b478af908515110d1efd5affected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < d4aa749e046435f054e94ebf50cad143d6229faeaffected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < 470f6a9175f13a53810734658c35cc5bba33be01affected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < ad1336274f733a7cb1f87b5c5908165a2c14df53affected
LinuxLinux1028a37daa148cc6cf85aa2aecb4390ddf1e1e56 < 02228f6aa6a64d588bc31e3267d05ff184d772ebaffected
LinuxLinux3.17affected
LinuxLinux0 < 3.17unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.164 <= 5.10.*unaffected
LinuxLinux5.15.89 <= 5.15.*unaffected
LinuxLinux6.1.7 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References