Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw: fix freeing IRQ in am65_cpsw_nuss_remove_tx_chns() When getting the IRQ we use k3_udma_glue_tx_get_irq() which returns negative error value on error. So not NULL check is not sufficient to deteremine if IRQ is valid. Check that IRQ is greater then zero to ensure it is valid. There is no issue at probe time but at runtime user can invoke .set_channels which results in the following call chain. am65_cpsw_set_channels() am65_cpsw_nuss_update_tx_rx_chns() am65_cpsw_nuss_remove_tx_chns() am65_cpsw_nuss_init_tx_chns() At this point if am65_cpsw_nuss_init_tx_chns() fails due to k3_udma_glue_tx_get_irq() then tx_chn->irq will be set to a negative value. Then, at subsequent .set_channels with higher channel count we will attempt to free an invalid IRQ in am65_cpsw_nuss_remove_tx_chns() leading to a kernel warning. The issue is present in the original commit that introduced this driver, although there, am65_cpsw_nuss_update_tx_rx_chns() existed as am65_cpsw_nuss_update_tx_chns().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 93a76530316a3d8cc2d82c3deca48424fee92100 before 321990fdf4f1bb64e818c7140688bf33d129e48d; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before ed8c0300f302338c36edb06bca99051e5be6fb2f; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before aea5cca681d268f794fa2385f9ec26a5cce025cd; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before 88fd5db8c0073bd91d18391feb5741aeb0a2b475; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before 8448c87b3af68bebca21e3136913f7f77e363515; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before 8aae91ae1c65782a169ec070e023d4d269e5d6e6; affected 93a76530316a3d8cc2d82c3deca48424fee92100 before 4395a44acb15850e492dd1de9ec4b6479d96bc80 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.235 through 5.10.*; unaffected 5.15.179 through 5.15.*; unaffected 6.1.129 through 6.1.*; unaffected 6.6.76 through 6.6.*; unaffected 6.12.13 through 6.12.*; unaffected 6.13.2 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/321990fdf4f1bb64e818c7140688bf33d129e48d
- https://git.kernel.org/stable/c/ed8c0300f302338c36edb06bca99051e5be6fb2f
- https://git.kernel.org/stable/c/aea5cca681d268f794fa2385f9ec26a5cce025cd
- https://git.kernel.org/stable/c/88fd5db8c0073bd91d18391feb5741aeb0a2b475
- https://git.kernel.org/stable/c/8448c87b3af68bebca21e3136913f7f77e363515
- https://git.kernel.org/stable/c/8aae91ae1c65782a169ec070e023d4d269e5d6e6
- https://git.kernel.org/stable/c/4395a44acb15850e492dd1de9ec4b6479d96bc80
ADP enrichment
No English description supplied.