CVE-2026-17523 (GCVE-0-2026-17523)

Vulnerability from cvelistv5 – Published: 2026-07-27 08:58 – Updated: 2026-09-10 13:31
VLAI
Title
can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet
Summary
In the Linux kernel, the following vulnerability has been resolved: can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet This patch switches the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and removes the hrtimer_tasklet.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 13:44 UTC
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1200 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c53a6ee88b0a91bd012ef1b7988c0b93dae6f24d , < 79305a826f872fe446c6fbf8450f515053ef6951 (git)
Affected: c53a6ee88b0a91bd012ef1b7988c0b93dae6f24d , < bf74aa86e111aa3b2fbb25db37e3a3fab71b5b68 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 4.19.226 , ≤ 4.19.* (semver)
Unaffected: 5.4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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