{"id":"CVE-2026-90098","revision":"147a27575e0e4d10a2ee004ddb95b374","records":[{"revision":"147a27575e0e4d10a2ee004ddb95b374","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90098","aliases":[],"title":"net: sparx5: fix sleep in atomic context in MAC table access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sparx5: fix sleep in atomic context in MAC table access\n\nsparx5_set_rx_mode() runs with netif_addr_lock_bh held and iterates\ndev->mc via __dev_mc_sync(), which per address calls sparx5_mc_sync() /\nsparx5_mc_unsync() -> sparx5_mact_learn() / sparx5_mact_forget().  These\ntake sparx5->lock, a mutex, and then poll the MAC access command\nregister with readx_poll_timeout(). A mutex may block, which is not\nallowed from atomic context.\n\nConvert the driver to the new .ndo_set_rx_mode_async callback introduced\nin commit 3554b4345d85 (\"net: introduce ndo_set_rx_mode_async and\nnetdev_rx_mode_work\"). The async callback is invoked from process\ncontext, so the mutex and sleeping completion poll can remain.\n\nObserved with CONFIG_PROVE_LOCKING, CONFIG_DEBUG_SPINLOCK,\nCONFIG_DEBUG_MUTEXES and CONFIG_DEBUG_ATOMIC_SLEEP enabled:\n\n  BUG: sleeping function called from invalid context at kernel/locking/mutex.c:591\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 217, name: ip\n  preempt_count: 201, expected: 0\n  Call trace:\n   __might_resched+0x144/0x248\n   __might_sleep+0x48/0x7c\n   __mutex_lock+0x74/0x850\n   mutex_lock_nested+0x24/0x30\n   sparx5_mact_learn+0x78/0x100\n   sparx5_mc_sync+0x40/0x54\n   __hw_addr_sync_dev+0xc4/0x170\n   sparx5_set_rx_mode+0x4c/0x58\n   __dev_set_rx_mode+0x64/0xa4\n   __dev_open+0x1ec/0x26c","state":0,"publishedAt":"2026-09-17T16:06:10.203+00:00","modifiedAt":"2026-10-19T08:57:56.415+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d6fce5141929697a27f029c633433d487f6f62cb\",\n                            \"lessThan\": \"648d196ccc03ae3b04402ae71ffa44959a85e88f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d6fce5141929697a27f029c633433d487f6f62cb\",\n                            \"lessThan\": \"b62793a7baeea9cf20209c9fd2e333311aaf3b8d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/648d196ccc03ae3b04402ae71ffa44959a85e88f","https://git.kernel.org/stable/c/b62793a7baeea9cf20209c9fd2e333311aaf3b8d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90098","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90098","identifiers":["CVE-2026-90098"]},"retained":false,"historicalAffected":[]}],"coverage":[]}