CVE-2017-7477

low-risk
Published 2017-04-25

Heap-based buffer overflow in drivers/net/macsec.c in the MACsec module in the Linux kernel through 4.10.12 allows attackers to cause a denial of service or possibly have unspecified other impact by leveraging the use of a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, leading to an error in the skb_to_sgvec function.

Do I need to act?

-
0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.0/10 High
LOCAL / HIGH complexity

Affected Products (1)

Affected Vendors

Linux

References (14)

Third Party Advisory http://www.securityfocus.com/bid/98014
Third Party Advisory http://www.securitytracker.com/id/1038500
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1615
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1616
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1445207
Patch https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4d6fa57...
Patch https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=5294b83...
Third Party Advisory http://www.securityfocus.com/bid/98014
Third Party Advisory http://www.securitytracker.com/id/1038500
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1615
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1616
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1445207
Patch https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4d6fa57...
Patch https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=5294b83...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal