VulnerabilityModified

CVE-2017-17053

HIGH 7.0EPSS 0.38%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.

CVSS 3.1: 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.38% probability · 31th percentile
CISA KEV: Not listed
Weakness: CWE-416
Affected: linux/linux kernel
Source: cve@mitre.org

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5ccIssue Tracking, Patch, Vendor Advisory
http://www.securityfocus.com/bid/102010Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5ccPatch, Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10Issue Tracking, Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5ccIssue Tracking, Patch, Vendor Advisory
http://www.securityfocus.com/bid/102010Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5ccPatch, Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10Issue Tracking, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.