Missing Release of Resource after Effective Lifetime Affecting kernel package, versions <0:4.9.62-21.56.amzn1
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-AMZN201803-KERNEL-1709096
- published27 Sept 2021
- disclosed22 Nov 2017
Introduced: 22 Nov 2017
CVE-2017-12190 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 kernel to version 0:4.9.62-21.56.amzn1 or higher.
This issue was patched in ALAS-2017-925.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.
References
- http://www.securityfocus.com/bid/101911
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95d78c28b5a85bacbc29b8dba7c04babb9b0d467
- https://bugzilla.redhat.com/show_bug.cgi?id=1495089
- http://seclists.org/oss-sec/2017/q4/52
- https://github.com/torvalds/linux/commit/2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058
- https://github.com/torvalds/linux/commit/95d78c28b5a85bacbc29b8dba7c04babb9b0d467
- https://support.f5.com/csp/article/K93472064?utm_source=f5support&utm_medium=RSS
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12190
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://access.redhat.com/errata/RHSA-2018:0654
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:1854
- https://access.redhat.com/errata/RHSA-2019:1170
- https://access.redhat.com/errata/RHSA-2019:1190
- https://usn.ubuntu.com/3582-1/
- https://usn.ubuntu.com/3582-2/
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://access.redhat.com/security/cve/CVE-2017-12190
- https://support.f5.com/csp/article/K93472064?utm_source=f5support&%3Butm_medium=RSS