CVE-2017-12192
The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of…
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
Description
The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678Patch, Vendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Vendor Advisory
- https://access.redhat.com/errata/RHSA-2018:0151
- https://bugzilla.redhat.com/show_bug.cgi?id=1493435Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678Patch, Vendor Advisory
- https://lkml.org/lkml/2017/9/18/764Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678Patch, Vendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Vendor Advisory
- https://access.redhat.com/errata/RHSA-2018:0151
- https://bugzilla.redhat.com/show_bug.cgi?id=1493435Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678Patch, Vendor Advisory
- https://lkml.org/lkml/2017/9/18/764Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.