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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Description
crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).
Metrics
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CVE Modified by Red Hat, Inc.5/13/2024 11:49:23 PM
Action
Type
Old Value
New Value
CVE Modified by Red Hat, Inc.2/12/2023 6:16:49 PM
Action
Type
Old Value
New Value
Removed
CVSS V2
Red Hat, Inc. (AV:L/AC:L/Au:N/C:N/I:N/A:C)
Removed
CVSS V3
Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Changed
Description
Algorithms not compatible with mcryptd could be spawned by mcryptd with a direct crypto_alloc_tfm invocation using a "mcryptd(alg)" name construct. This causes mcryptd to crash the kernel if an arbitrary "alg" is incompatible and not intended to be used with mcryptd.
crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).
crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).
Algorithms not compatible with mcryptd could be spawned by mcryptd with a direct crypto_alloc_tfm invocation using a "mcryptd(alg)" name construct. This causes mcryptd to crash the kernel if an arbitrary "alg" is incompatible and not intended to be used with mcryptd.
OR
*cpe:2.3:o:linux:linux_kernel:4.8.14:*:*:*:*:*:*:* (and previous)
Added
CVSS V2
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Added
CVSS V3
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added
CWE
CWE-476
Changed
Reference Type
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48a992727d82cb7db076fa15d372178743b1f4cd No Types Assigned
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48a992727d82cb7db076fa15d372178743b1f4cd Third Party Advisory, Issue Tracking, Patch
Changed
Reference Type
http://marc.info/?l=linux-crypto-vger&m=148063683310477&w=2 No Types Assigned
http://marc.info/?l=linux-crypto-vger&m=148063683310477&w=2 Third Party Advisory
Changed
Reference Type
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.15 No Types Assigned