{"id":"CVE-2024-26859","title":"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 drive…","summary":"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 drive…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-362"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.2, < 4.19.311","linux_kernel >= 4.20, < 5.4.273","linux_kernel >= 5.5, < 5.10.214","linux_kernel >= 5.11, < 5.15.153","linux_kernel >= 5.16, < 6.1.83","linux_kernel >= 6.2, < 6.6.23","linux_kernel >= 6.7, < 6.7.11","linux_kernel >= 6.8, < 6.8.2","debian_linux = 10.0"],"patched":["linux_kernel 6.8.2"],"published":"2024-04-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:26.223","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26859","references":[{"url":"https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00182,"epssPercentile":0.07749,"ingestedAt":"2026-10-15T03:30:12.652Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-04-23T14:02:31.556726Z"},"slug":"CVE-2024-26859","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 4.2, < 4.19.311`\n- `linux_kernel >= 4.20, < 5.4.273`\n- `linux_kernel >= 5.5, < 5.10.214`\n- `linux_kernel >= 5.11, < 5.15.153`\n- `linux_kernel >= 5.16, < 6.1.83`\n- `linux_kernel >= 6.2, < 6.6.23`\n- `linux_kernel >= 6.7, < 6.7.11`\n- `linux_kernel >= 6.8, < 6.8.2`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.2`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}