{"id":"CVE-2026-74457","title":"can: peak_usb: add bounds check for USB channel index","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_usb: add bounds check for USB channel index\n\nThe channel control index ctrl_idx is derived from rx->len which comes\ndirectly from a device USB payload. The ma…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 18b1a868a2cda66fb438007ba47ce5f2484db381","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 0c9268457bd6e4058fe55b4db01b16661c2eacf5","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 94fb6fe83ce152532b11b36730b30f3dc0c94217","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < f97b7e5e1cdaae15cd95b3a360028c7929664969","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 1acab790b7cecd4e144d1d18bdfe549e282f6b0b","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 0149fdb50a30944827acf9600a2cc44de0325a7f","Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 39132f166ca8ce00ae60d8a9068e06a60943cc4b","Linux 3.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:57:34.054419Z"},"published":"2026-08-15","updated":"2026-11-06","sourceUpdated":"2026-11-06T17:05:46.411Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74457","references":[{"url":"https://git.kernel.org/stable/c/18b1a868a2cda66fb438007ba47ce5f2484db381"},{"url":"https://git.kernel.org/stable/c/0c9268457bd6e4058fe55b4db01b16661c2eacf5"},{"url":"https://git.kernel.org/stable/c/94fb6fe83ce152532b11b36730b30f3dc0c94217"},{"url":"https://git.kernel.org/stable/c/825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f"},{"url":"https://git.kernel.org/stable/c/f97b7e5e1cdaae15cd95b3a360028c7929664969"},{"url":"https://git.kernel.org/stable/c/1acab790b7cecd4e144d1d18bdfe549e282f6b0b"},{"url":"https://git.kernel.org/stable/c/0149fdb50a30944827acf9600a2cc44de0325a7f"},{"url":"https://git.kernel.org/stable/c/39132f166ca8ce00ae60d8a9068e06a60943cc4b"}],"tags":["cve.org"],"epss":0.00177,"epssPercentile":0.07253,"ingestedAt":"2026-11-06T18:00:12.557Z","slug":"CVE-2026-74457","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_usb: add bounds check for USB channel index\n\nThe channel control index ctrl_idx is derived from rx->len which comes\ndirectly from a device USB payload. The mask 0x0f allows values 0-15, but\nthe array size of usb_if->dev[] is only 2. Values 2-15 cause heap\nout-of-bounds read, eventually causing kernel panic in the IRQ context.\n\nAdd bounds checking for ctrl_idx before the array access in both\npcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().\n\n## Affected\n\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 18b1a868a2cda66fb438007ba47ce5f2484db381`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 0c9268457bd6e4058fe55b4db01b16661c2eacf5`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 94fb6fe83ce152532b11b36730b30f3dc0c94217`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < f97b7e5e1cdaae15cd95b3a360028c7929664969`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 1acab790b7cecd4e144d1d18bdfe549e282f6b0b`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 0149fdb50a30944827acf9600a2cc44de0325a7f`\n- `Linux >= d8a199355f8f8a0797c00d98788d7282c9ea38bd < 39132f166ca8ce00ae60d8a9068e06a60943cc4b`\n- `Linux 3.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}