Use of Insufficiently Random Values The advisory has been revoked - it doesn't affect any version of package kernel-bootwrapper (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RHEL7-KERNELBOOTWRAPPER-2871697
- published15 Jun 2022
- disclosed5 Jun 2022
Introduced: 5 Jun 2022
CVE-2022-32296 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.
References
- https://access.redhat.com/security/cve/CVE-2022-32296
- https://arxiv.org/abs/2209.12993
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
- https://github.com/0xkol/rfc6056-device-tracker
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
- https://www.debian.org/security/2022/dsa-5173