CVE-2017-18202 — The __oom_reap_task_mm function in mm/oom_kill
The __oom_reap_task_mm function in mm/oom_kill.c in the Linux kernel before 4.14.4 mishandles gather operations, which allows attackers to cause a denial of service (TLB entry leak or use-after-free) or possibly have unspecified other impact by triggering a copy_to_user call with
Published
2018-02-27T06:00:00.000Z
Last modified
2024-08-05T21:13:49.067Z
01What is this vulnerability?
The __oom_reap_task_mm function in mm/oom_kill.c in the Linux kernel before 4.14.4 mishandles gather operations, which allows attackers to cause a denial of service (TLB entry leak or use-after-free) or possibly have unspecified other impact by triggering a copy_to_user call within a certain time window.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2018-02-27T06:00:00.000Z
- Last modified: 2024-08-05T21:13:49.067Z
09References
- git.kernel.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=687cb0…
- github.com — https://github.com/torvalds/linux/commit/687cb0884a714ff484d038e9190edc874edcf14…
- www.kernel.org — https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.4
- www.securityfocus.com — http://www.securityfocus.com/bid/103161
- access.redhat.com — https://access.redhat.com/errata/RHSA-2018:2772
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