{"id":"CVE-2025-68220","summary":"net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error\n\nMake knav_dma_open_channel consistently return NULL on error instead\nof ERR_PTR. Currently the header include/linux/soc/ti/knav_dma.h\nreturns NULL when the driver is disabled, but the driver\nimplementation does not even return NULL or ERR_PTR on failure,\ncausing inconsistency in the users. This results in a crash in\nnetcp_free_navigator_resources as followed (trimmed):\n\nUnhandled fault: alignment exception (0x221) at 0xfffffff2\n[fffffff2] *pgd=80000800207003, *pmd=82ffda003, *pte=00000000\nInternal error: : 221 [#1] SMP ARM\nModules linked in:\nCPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.17.0-rc7 #1 NONE\nHardware name: Keystone\nPC is at knav_dma_close_channel+0x30/0x19c\nLR is at netcp_free_navigator_resources+0x2c/0x28c\n\n[... TRIM...]\n\nCall trace:\n knav_dma_close_channel from netcp_free_navigator_resources+0x2c/0x28c\n netcp_free_navigator_resources from netcp_ndo_open+0x430/0x46c\n netcp_ndo_open from __dev_open+0x114/0x29c\n __dev_open from __dev_change_flags+0x190/0x208\n __dev_change_flags from netif_change_flags+0x1c/0x58\n netif_change_flags from dev_change_flags+0x38/0xa0\n dev_change_flags from ip_auto_config+0x2c4/0x11f0\n ip_auto_config from do_one_initcall+0x58/0x200\n do_one_initcall from kernel_init_freeable+0x1cc/0x238\n kernel_init_freeable from kernel_init+0x1c/0x12c\n kernel_init from ret_from_fork+0x14/0x38\n[... TRIM...]\n\nStandardize the error handling by making the function return NULL on\nall error conditions. The API is used in just the netcp_core.c so the\nimpact is limited.\n\nNote, this change, in effect reverts commit 5b6cb43b4d62 (\"net:\nethernet: ti: netcp_core: return error while dma channel open issue\"),\nbut provides a less error prone implementation.","modified":"2026-04-16T04:41:21.182002208Z","published":"2025-12-16T13:57:14.142Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68220.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2572c358ee434ce4b994472cceeb4043cbff5bc5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3afeb909c3e2e0eb19b1e20506196e5f2d9c2259"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8427218ecbd7f8559c37972e66cb0fa06e82353b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/90a88306eb874fe4bbdd860e6c9787f5bbc588b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/952637c5b9be64539cd0e13ef88db71a1df46373"},{"type":"WEB","url":"https://git.kernel.org/stable/c/af6b10a13fc0aee37df4a8292414cc055c263fa3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9608637ecc165d7d6341df105aee44691461fb9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fbb53727ca789a8d27052aab4b77ca9e2a0fae2b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68220.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68220"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"88139ed030583557751e279968e13e892ae10825"},{"fixed":"af6b10a13fc0aee37df4a8292414cc055c263fa3"},{"fixed":"8427218ecbd7f8559c37972e66cb0fa06e82353b"},{"fixed":"3afeb909c3e2e0eb19b1e20506196e5f2d9c2259"},{"fixed":"2572c358ee434ce4b994472cceeb4043cbff5bc5"},{"fixed":"952637c5b9be64539cd0e13ef88db71a1df46373"},{"fixed":"fbb53727ca789a8d27052aab4b77ca9e2a0fae2b"},{"fixed":"f9608637ecc165d7d6341df105aee44691461fb9"},{"fixed":"90a88306eb874fe4bbdd860e6c9787f5bbc588b5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68220.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.18.0"},{"fixed":"5.4.302"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.247"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.197"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.159"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.118"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.60"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68220.json"}}],"schema_version":"1.7.5"}