Metrics
Affected Vendors & Products
Wed, 11 Sep 2024 13:30:00 +0000
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Metrics |
ssvc
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Fri, 06 Sep 2024 17:00:00 +0000
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-401 CWE-416 |
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CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* |
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Vendors & Products |
Linux
Linux linux Kernel |
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Metrics |
cvssV3_1
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cvssV3_1
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Wed, 04 Sep 2024 23:30:00 +0000
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References |
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Metrics |
threat_severity
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cvssV3_1
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Wed, 04 Sep 2024 18:45:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: idpf: fix memory leaks and crashes while performing a soft reset The second tagged commit introduced a UAF, as it removed restoring q_vector->vport pointers after reinitializating the structures. This is due to that all queue allocation functions are performed here with the new temporary vport structure and those functions rewrite the backpointers to the vport. Then, this new struct is freed and the pointers start leading to nowhere. But generally speaking, the current logic is very fragile. It claims to be more reliable when the system is low on memory, but in fact, it consumes two times more memory as at the moment of running this function, there are two vports allocated with their queues and vectors. Moreover, it claims to prevent the driver from running into "bad state", but in fact, any error during the rebuild leaves the old vport in the partially allocated state. Finally, if the interface is down when the function is called, it always allocates a new queue set, but when the user decides to enable the interface later on, vport_open() allocates them once again, IOW there's a clear memory leak here. Just don't allocate a new queue set when performing a reset, that solves crashes and memory leaks. Readd the old queue number and reopen the interface on rollback - that solves limbo states when the device is left disabled and/or without HW queues enabled. | |
Title | idpf: fix memory leaks and crashes while performing a soft reset | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2024-09-04T18:36:01.856Z
Updated: 2024-12-19T09:19:14.244Z
Reserved: 2024-08-21T05:34:56.667Z
Link: CVE-2024-44964
Updated: 2024-09-11T12:42:27.542Z
Status : Analyzed
Published: 2024-09-04T19:15:30.940
Modified: 2024-09-06T16:36:45.137
Link: CVE-2024-44964