crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify...
Vulnerability Description
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://access.redhat.com/errata/RHSA-2017:2437
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
- https://access.redhat.com/errata/RHSA-2017:2444
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:1842
- https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
- http://www.openwall.com/lists/oss-security/2016/11/04/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1386286
- http://www.securityfocus.com/bid/94217
- https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.