CVE-2022-49915

Summary

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

mISDN: fix possible memory leak in mISDN_register_device()

Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, add put_device() to give up the reference, so that the name can be freed in kobject_cleanup() when the refcount is 0.

Set device class before put_device() to avoid null release() function WARN message in device_release().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < d1d1aede313eb2b9a84afd60ff6cfb7c33631e0eaffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 080aabfb29b2ee9cbb8894a1d039651943d3773eaffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < a636fc5a7cabd05699b5692ad838c2c7a3abec7baffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 2ff6b669523d3b3d253a044fa9636a67d0694995affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < e77d213843e67b4373285712699b692f9c743f61affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 029d5b7688a2f3a86f2a3be5a6ba9cc968c80e41affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 0d4e91efcaee081e919b3c50e875ecbb84290e41affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < e7d1d4d9ac0dfa40be4c2c8abd0731659869b297affected
LinuxLinux2.6.30affected
LinuxLinux0 < 2.6.30unaffected
LinuxLinux4.9.333 <= 4.9.*unaffected
LinuxLinux4.14.299 <= 4.14.*unaffected
LinuxLinux4.19.265 <= 4.19.*unaffected
LinuxLinux5.4.224 <= 5.4.*unaffected
LinuxLinux5.10.154 <= 5.10.*unaffected
LinuxLinux5.15.78 <= 5.15.*unaffected
LinuxLinux6.0.8 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References