{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26859", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/bnx2x: Prevent access to a freed page in page_pool\n\nFix race condition leading to system crash during EEH error handling\n\nDuring EEH error recovery, the bnx2x driver's transmit timeout logic\ncould cause a race condition when handling reset tasks. The\nbnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(),\nwhich ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload()\nSGEs are freed using bnx2x_free_rx_sge_range(). However, this could\noverlap with the EEH driver's attempt to reset the device using\nbnx2x_io_slot_reset(), which also tries to free SGEs. This race\ncondition can result in system crashes due to accessing freed memory\nlocations in bnx2x_free_rx_sge()\n\n799 static inline void bnx2x_free_rx_sge(struct bnx2x *bp,\n800\t\t\t\tstruct bnx2x_fastpath *fp, u16 index)\n801 {\n802\tstruct sw_rx_page *sw_buf = &fp->rx_page_ring[index];\n803 struct page *page = sw_buf->page;\n....\nwhere sw_buf was set to NULL after the call to dma_unmap_page()\nby the preceding thread.\n\n EEH: Beginning: 'slot_reset'\n PCI 0011:01:00.0#10000: EEH: Invoking bnx2x->slot_reset()\n bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing...\n bnx2x 0011:01:00.0: enabling device (0140 -> 0142)\n bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --> driver unload\n Kernel attempted to read user page (0) - exploit attempt? (uid: 0)\n BUG: Kernel NULL pointer dereference on read at 0x00000000\n Faulting instruction address: 0xc0080000025065fc\n Oops: Kernel access of bad area, sig: 11 [#1]\n .....\n Call Trace:\n [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable)\n [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0\n [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550\n [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60\n [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170\n [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0\n [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\n\nTo solve this issue, we need to verify page pool allocations before\nfreeing." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "4cace675d687", "version_value": "7bcc090c8111" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9" }, { "url": "https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4" }, { "url": "https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699" }, { "url": "https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598" }, { "url": "https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c" }, { "url": "https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb" }, { "url": "https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68" }, { "url": "https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec" }, { "url": "https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }