CVE-2025-68220

Description

In the Linux kernel, the following vulnerability has been resolved:net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return null on errorMake knav_dma_open_channel consistently return null on error insteadof ERR_PTR. Currently the header include/linux/soc/ti/knav_dma.hreturns null when the driver is disabled, but the driverimplementation does not even return null or ERR_PTR on failure,causing inconsistency in the users. This results in a crash innetcp_free_navigator_resources as followed (trimmed):Unhandled fault: alignment exception (0x221) at 0xfffffff2[fffffff2] *pgd=80000800207003, *pmd=82ffda003, *pte=00000000Internal error: : 221 [#1] SMP ARMModules linked in:CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.17.0-rc7 #1 NONEHardware name: KeystonePC is at knav_dma_close_channel+0x30/0x19cLR is at netcp_free_navigator_resources+0x2c/0x28c[... TRIM...]Call trace: knav_dma_close_channel from netcp_free_navigator_resources+0x2c/0x28c netcp_free_navigator_resources from netcp_ndo_open+0x430/0x46c netcp_ndo_open from __dev_open+0x114/0x29c __dev_open from __dev_change_flags+0x190/0x208 __dev_change_flags from netif_change_flags+0x1c/0x58 netif_change_flags from dev_change_flags+0x38/0xa0 dev_change_flags from ip_auto_config+0x2c4/0x11f0 ip_auto_config from do_one_initcall+0x58/0x200 do_one_initcall from kernel_init_freeable+0x1cc/0x238 kernel_init_freeable from kernel_init+0x1c/0x12c kernel_init from ret_from_fork+0x14/0x38[... TRIM...]Standardize the error handling by making the function return null onall error conditions. The API is used in just the netcp_core.c so theimpact is limited.Note, this change, in effect reverts commit 5b6cb43b4d62 (net:ethernet: ti: netcp_core: return error while dma channel open issue),but provides a less error prone implementation.

Risk Information

Associated Vulnerability

Patch Details

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234