cve-2017-12190
Vulnerability from cvelistv5
Published
2017-11-22 18:00
Modified
2024-08-05 18:28
Severity ?
Summary
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
secalert@redhat.comhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058Issue Tracking, Patch, Vendor Advisory
secalert@redhat.comhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95d78c28b5a85bacbc29b8dba7c04babb9b0d467Issue Tracking, Patch, Vendor Advisory
secalert@redhat.comhttp://seclists.org/oss-sec/2017/q4/52Issue Tracking, Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8Issue Tracking, Third Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/101911Issue Tracking, Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:0654
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:0676
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:1062
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:1854
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2019:1170
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2019:1190
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1495089Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/torvalds/linux/commit/2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/torvalds/linux/commit/95d78c28b5a85bacbc29b8dba7c04babb9b0d467Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
secalert@redhat.comhttps://support.f5.com/csp/article/K93472064?utm_source=f5support&amp%3Butm_medium=RSS
secalert@redhat.comhttps://usn.ubuntu.com/3582-1/
secalert@redhat.comhttps://usn.ubuntu.com/3582-2/
secalert@redhat.comhttps://usn.ubuntu.com/3583-1/
secalert@redhat.comhttps://usn.ubuntu.com/3583-2/
Impacted products
n/aLinux kernel through v4.14-rc5
Show details on NVD website

To clipboard 

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