VulnerabilityModified
CVE-2019-11487
The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists.
HIGH 7.8EPSS 0.71%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.71% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/29/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108054Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2741Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0174Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1752Exploit, Mitigation, Third Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Third Party Advisory
- https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Third Party Advisory
- https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00014.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00015.htmlMailing List, Third Party Advisory
- https://lwn.net/Articles/786044/Exploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190517-0005/Third Party Advisory
- https://support.f5.com/csp/article/K14255532Third Party Advisory
- https://usn.ubuntu.com/4069-1/Third Party Advisory
- https://usn.ubuntu.com/4069-2/Third Party Advisory
- https://usn.ubuntu.com/4115-1/Third Party Advisory
- https://usn.ubuntu.com/4118-1/Third Party Advisory
- https://usn.ubuntu.com/4145-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.