CVE-2021-20317
A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.4 |
| linux / linux_kernel | 5.4 | 5.4.x |
| debian / debian_linux | 9.0 | 9.0.x |
| debian / debian_linux | 10.0 | 10.0.x |
- https://bugzilla.redhat.com/show_bug.cgi?id=2005258
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5096
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