CVE-2025-71135None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt() The variable mddev->private is first assigned to conf and then checked: conf = md…
▾ 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:
md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt()
The variable mddev->private is first assigned to conf and then checked:
conf = mddev->private; if (!conf) ...
If conf is NULL, then mddev->private is also NULL. In this case, null-pointer dereferences can occur when calling raid5_quiesce():
raid5_quiesce(mddev, true); raid5_quiesce(mddev, false);
since mddev->private is assigned to conf again in raid5_quiesce(), and conf is dereferenced in several places, for example:
conf->quiesce = 0; wake_up(&conf->wait_for_quiescent);
To fix this issue, the function should unlock mddev and return before invoking raid5_quiesce() when conf is NULL, following the existing pattern in raid5_change_consistency_policy().
Linux >= be19e6e4339d1579d5f2fae8ce4facf9521dbbfc < 20597b7229aea8b5bc45cd92097640257c7fc33bLinux >= fa1944bbe6220eb929e2c02e5e8706b908565711 < e5abb6af905de6b2fead8a0b3f32ab0b81468a01Linux >= fa1944bbe6220eb929e2c02e5e8706b908565711 < 7ad6ef91d8745d04aff9cce7bdbc6320d8e05fe9Linux >= 6.12.4 < 6.12.64Linux 6.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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