Description
The SRCU code was added in upstream kernel v6.4-rc1 and removed before v6.4. This bug only existed in development kernels. Please see https://lore.kernel.org/all/ZTKVfoQZplpB8rki@casper.infradead.org and https://bugzilla.suse.com/show_bug.cgi?id=1215932 for more information.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | linux-riscv +11 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Advisories 1
- WID-SEC-2023-2577 Linux-Kernel: Schwachstelle ermöglicht Denial of Service und Offenlegung von Informationen BSI CERT-Bund (WID) · Oct 4, 2023