{"id":"CVE-2026-17523","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet\n\nThis patch switches the timer to HRTIMER_MODE_SOFT, which executed the\ntimer callback in softirq…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet\n\nThis patch switches the timer to HRTIMER_MODE_SOFT, which executed the\ntimer callback in softirq…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.29.1, < 4.19.226","linux_kernel >= 4.20, < 5.4","linux_kernel = 2.6.29"],"patched":["linux_kernel 5.4"],"published":"2026-07-27","updated":"2026-10-02","sourceUpdated":"2026-10-02T15:12:08.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-17523","references":[{"url":"https://git.kernel.org/stable/c/79305a826f872fe446c6fbf8450f515053ef6951","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf74aa86e111aa3b2fbb25db37e3a3fab71b5b68","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00165,"epssPercentile":0.05674,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-27T13:44:24.567768Z"},"ingestedAt":"2026-09-09T08:04:11.992Z","slug":"CVE-2026-17523","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet\n\nThis patch switches the timer to HRTIMER_MODE_SOFT, which executed the\ntimer callback in softirq context and removes the hrtimer_tasklet.\n\n## Affected\n\n- `linux_kernel >= 2.6.29.1, < 4.19.226`\n- `linux_kernel >= 4.20, < 5.4`\n- `linux_kernel = 2.6.29`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":36981,"id":"CVE-2026-17523","ts":1789022125840,"field":"cvss","old":null,"new":"7.8"},{"seq":36980,"id":"CVE-2026-17523","ts":1789022125840,"field":"severity","old":"none","new":"high"}]}