CVE-2026-46270
Linux kernel power_supply IRQ use-after-free race; may crash system
Is CVE-2026-46270 being exploited?
Not confirmed. CVE-2026-46270 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.13% probability of exploitation in the next 30 days.
How severe is CVE-2026-46270?
CVE-2026-46270 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-46270?
Yes. A fix has been recorded for CVE-2026-46270. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46270 affect?
CVE-2026-46270 affects Linux kernel (power_supply subsystem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46270?
Apply kernel patch with rt9455 fix
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
IRQ may fire after power_supply handle is freed, causing crash or memory corruption
Patch when possible
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < 62d753b916bd500bb269b7078cdab73198ab4718
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < a39f8f06216f73ef40e71e2fe4ad071964c1fd36
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < af261f218a7606f93d2c786353d60bb4feb56ef0
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < 2178dc65d45e2f7bcaa8af8d80d100419bdab251
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < 64e15155095f39f4dec9b4659da1238ef8fc54d4
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < 721449a15170fc5f028a7576d7f65b9f60d53482
- affected>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a and < e2febe375e5ea5afed92f4cd9711bde8f24ee6d2
- affected4.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.