Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod Since commit f7b705c238d1 ("scsi: pm80xx: Set phy_attached to zero when device is gone") UBSAN reports: UBSAN: array-index-out-of-bounds in drivers/scsi/pm8001/pm8001_sas.c:786:17 index 28 is out of range for type 'pm8001_phy [16]' on rmmod when using an expander. For a direct attached device, attached_phy contains the local phy id. For a device behind an expander, attached_phy contains the remote phy id, not the local phy id. I.e. while pm8001_ha will have pm8001_ha->chip->n_phy local phys, for a device behind an expander, attached_phy can be much larger than pm8001_ha->chip->n_phy (depending on the amount of phys of the expander). E.g. on my system pm8001_ha has 8 phys with phy ids 0-7. One of the ports has an expander connected. The expander has 31 phys with phy ids 0-30. The pm8001_ha->phy array only contains the phys of the HBA. It does not contain the phys of the expander. Thus, it is wrong to use attached_phy to index the pm8001_ha->phy array for a device behind an expander. Thus, we can only clear phy_attached for devices that are directly attached.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 05b512879eab41faa515b67fa3896d0005e97909 before d94be0a6ae9ade706d4270e740bdb4f79953a7fc; affected bc2140c8136200b4437e1abc0fb659968cb9baab before 45acbf154befedd9bc135f5e031fe7855d1e6493; affected 1d8f9378cb4800c18e20d80ecd605b2b93e87a03 before eef5ef400893f8e3dbb09342583be0cdc716d566; affected 30e482dfb8f27d22f518695d4bcb5e7f4c6cb08a before 9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582; affected a862d24e1fc3ab1b5e5f20878d2898cea346d0ec before e62251954a128a2d0fcbc19e5fa39e08935bb628; affected 0f9802f174227f553959422f844eeb9ba72467fe before 9326a1541e1b7ed3efdbab72061b82cf01c6477a; affected f7b705c238d1483f0a766e2b20010f176e5c0fb7 before 83ced3c206c292458e47c7fac54223abc7141585; affected f7b705c238d1483f0a766e2b20010f176e5c0fb7 before 251be2f6037fb7ab399f68cd7428ff274133d693; affected 722026c010fa75bcf9e2373aff1d7930a3d7e3cf; affected 5.4.293 before 5.4.301; affected 5.10.237 before 5.10.246; affected 5.15.181 before 5.15.195; affected 6.1.136 before 6.1.156; affected 6.6.89 before 6.6.112; affected 6.12.26 before 6.12.53; affected 6.14.5 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 5.4.301 through 5.4.*; unaffected 5.10.246 through 5.10.*; unaffected 5.15.195 through 5.15.*; unaffected 6.1.156 through 6.1.*; unaffected 6.6.112 through 6.6.*; unaffected 6.12.53 through 6.12.*; unaffected 6.17.3 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d94be0a6ae9ade706d4270e740bdb4f79953a7fc
- https://git.kernel.org/stable/c/45acbf154befedd9bc135f5e031fe7855d1e6493
- https://git.kernel.org/stable/c/eef5ef400893f8e3dbb09342583be0cdc716d566
- https://git.kernel.org/stable/c/9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582
- https://git.kernel.org/stable/c/e62251954a128a2d0fcbc19e5fa39e08935bb628
- https://git.kernel.org/stable/c/9326a1541e1b7ed3efdbab72061b82cf01c6477a
- https://git.kernel.org/stable/c/83ced3c206c292458e47c7fac54223abc7141585
- https://git.kernel.org/stable/c/251be2f6037fb7ab399f68cd7428ff274133d693