High severity · published Oct 17, 2018
CVE-2018-18445
In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses…
7.8
CVSS
0.5%
EPSS
No
On KEV
Description
In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.14.9 before 4.14.75; 4.15 before 4.18.13 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0; 7.6 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18445
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18445
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0512
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0514
Issue Tracking
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686
Patch
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75
Patch
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13
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