Race Condition The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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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Test your applications- Snyk IDSNYK-RHEL8-KERNELHEADERS-4120600
- published26 Jul 2021
- disclosed28 Jan 2021
Introduced: 28 Jan 2021
CVE-2021-3348 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.
nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.
References
- https://access.redhat.com/security/cve/CVE-2021-3348
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258
- https://www.openwall.com/lists/oss-security/2021/01/28/3
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- http://www.openwall.com/lists/oss-security/2021/02/01/1
- https://access.redhat.com/errata/RHSA-2021:4356