CVE-2023-53480None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: kobject: Add sanity check for kset->kobj.ktype in kset_register() When I register a kset in the following way: static struct kset my_kset; kobject_set_name(&my_kset.…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
kobject: Add sanity check for kset->kobj.ktype in kset_register()
When I register a kset in the following way: static struct kset my_kset; kobject_set_name(&my_kset.kobj, "my_kset"); ret = kset_register(&my_kset);
A null pointer dereference exception is occurred:
[ 4453.568337] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000028
... ...
[ 4453.810361] Call trace:
[ 4453.813062] kobject_get_ownership+0xc/0x34
[ 4453.817493] kobject_add_internal+0x98/0x274
[ 4453.822005] kset_register+0x5c/0xb4
[ 4453.825820] my_kobj_init+0x44/0x1000 [my_kset]
... ...
Because I didn't initialize my_kset.kobj.ktype.
According to the description in Documentation/core-api/kobject.rst:
So add sanity check to make sure kset->kobj.ktype is not NULL.
Linux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 039ec9db2d30032eafa365f5f89b30eca5322b05Linux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 964e025ceefdf75da46b0133d0c2790de451aeecLinux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 5df5829158513134ddcaf2184d9286eda7b0bb18Linux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < f3f6bf22a4f5ba649cf26ae4670de5c7f861bdefLinux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 48aebbe801e78a8932404c122ed0e880ccedc220Linux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 1a772881bc059c596d8ca587cbd2a233edce3d3bLinux >= 5f81880d5204ee2388fd9a75bb850ccd526885b7 < 4d0fe8c52bb3029d83e323c961221156ab98680bLinux 4.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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