CVE-2026-90121
Description
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v5: Clear per-CPU IRS data on teardown IRS affinity setup publishes an IRS pointer and IAFFID state in the per-CPU data before the remaining IRS initialization can fail. The error path then frees the IRS data without clearing that published state, leaving CPUs associated with freed memory. On initialization failure and normal IRS teardown, clear the per-CPU IRS association by removing the stale pointer to irs_data. Also invalidate the per-CPU IAFFID state for any CPUs that were tied to the IRS before it was freed.
How to fix
- Linux Linux0887d41abf76638942688cb0c0ff8087f52e2b33, 54937af6f4a0d44c2852a203d457902f3264c906, 3dfc0ab5fefd052c6028c4632b1fad8bdaf7967e or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 5cb1b6dab2def316671ea2565291a86ad58b884c ≤ v < 0887d41abf76638942688cb0c0ff8087f52e2b33, 5cb1b6dab2def316671ea2565291a86ad58b884c ≤ v < 54937af6f4a0d44c2852a203d457902f3264c906, 5cb1b6dab2def316671ea2565291a86ad58b884c ≤ v < 3dfc0ab5fefd052c6028c4632b1fad8bdaf7967e, 6.17 | 0887d41abf76638942688cb0c0ff8087f52e2b33, 54937af6f4a0d44c2852a203d457902f3264c906, 3dfc0ab5fefd052c6028c4632b1fad8bdaf7967e |
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