{"id":"CVE-2024-26859","revision":"c75e51ccc42644509c3c441f24956e47","records":[{"revision":"c75e51ccc42644509c3c441f24956e47","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-26859","aliases":[],"title":"net/bnx2x: Prevent access to a freed page in page_pool","description":"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.","state":0,"publishedAt":"2024-04-17T10:27:23.709+00:00","modifiedAt":"2026-10-15T00:38:51.344+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/broadcom/bnx2x/bnx2x_cmn.h\"\n ],\n \"versions\": [\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"7bcc090c81116c66936a7415f2c6b1483a4bcfd9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"4f37d3a7e004bbf560c21441ca9c022168017ec4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"8eebff95ce9558be66a36aa7cfb43223f3ab4699\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"cf7d8cba639ae792a42c2a137b495eac262ac36c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"c51f8b6930db3f259b8820b589f2459d2df3fc68\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"44f9f1abb0ecc43023225ab9539167facbabf0ec\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4cace675d687ebd2d813e90af80ff87ee85202f9\",\n \"lessThan\": \"d27e2da94a42655861ca4baea30c8cd65546f25d\",\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/broadcom/bnx2x/bnx2x_cmn.h\"\n ],\n \"versions\": [\n {\n \"version\": \"4.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.311\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.273\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.214\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.153\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.83\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.23\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.7.11\",\n \"lessThanOrEqual\": \"6.7.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.2\",\n \"lessThanOrEqual\": \"6.8.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9","https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4","https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699","https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598","https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c","https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb","https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68","https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec","https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26859","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26859","identifiers":["CVE-2024-26859"]},"retained":false,"historicalAffected":[]}],"coverage":[]}