CVE-2017-12190
- State
- Published
- Severity
- Not scored
- Published
- Nov 22, 2017
- Updated
- Aug 5, 2024
- Reserved
- Aug 1, 2017
Description
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.
Scores
The record has no CVSS score.
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Linux kernel through v4.14-rc5n/a |
|
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058
- 101911vdb-entry
- [debian-lts-announce] 20171210 [SECURITY] [DLA 1200-1] linux security updatemailing-list
- USN-3583-2vendor-advisory
- RHSA-2018:1854vendor-advisory
- USN-3582-1vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95d78c28b5a85bacbc29b8dba7c04babb9b0d467
- RHSA-2018:1062vendor-advisory
- https://github.com/torvalds/linux/commit/95d78c28b5a85bacbc29b8dba7c04babb9b0d467
- RHSA-2018:0654vendor-advisory
- USN-3583-1vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1495089
- https://github.com/torvalds/linux/commit/2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058
- http://seclists.org/oss-sec/2017/q4/52
- RHSA-2018:0676vendor-advisory
- USN-3582-2vendor-advisory
- RHSA-2019:1170vendor-advisory
- RHSA-2019:1190vendor-advisory
- https://support.f5.com/csp/article/K93472064?utm_source=f5support&%3Butm_medium=RSS
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