CVE-2024-56708: EDAC/igen6: Avoid segmentation fault on module unload
First published: Sat Dec 28 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: EDAC/igen6: Avoid segmentation fault on module unload The segmentation fault happens because: During modprobe: 1. In igen6_probe(), igen6_pvt will be allocated with kzalloc() 2. In igen6_register_mci(), mci->pvt_info will point to &igen6_pvt->imc[mc] During rmmod: 1. In mci_release() in edac_mc.c, it will kfree(mci->pvt_info) 2. In igen6_remove(), it will kfree(igen6_pvt); Fix this issue by setting mci->pvt_info to NULL to avoid the double kfree.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=5.11<5.15.174 | |
| Linux Linux kernel | >=5.16<6.1.120 | |
| Linux Linux kernel | >=6.2<6.6.64 | |
| Linux Linux kernel | >=6.7<6.11.11 | |
| Linux Linux kernel | >=6.12<6.12.2 |
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Reference Links
- https://git.kernel.org/stable/c/029ac07bb92d2f7502d47a4916f197a8445d83bf
- https://git.kernel.org/stable/c/2a80e710bbc088a2511c159ee4d910456c5f0832
- https://git.kernel.org/stable/c/830cabb61113d92a425dd3038ccedbdfb3c8d079
- https://git.kernel.org/stable/c/e5c7052664b61f9e2f896702d20552707d0ef60a
- https://git.kernel.org/stable/c/db60326f2c47b079e36785ace621eb3002db2088
- https://git.kernel.org/stable/c/fefaae90398d38a1100ccd73b46ab55ff4610fba
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