CVE-2021-47291
Assigner: Linux
Published: 2024-05-21T14:35:16.071Z
State: PUBLISHED
descriptions: value: In the Linux kernel, the following vulnerability has been resolved:

ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions

While running the self-tests on a KASAN enabled kernel, I observed a
slab-out-of-bounds splat very similar to the one reported in
commit 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in
 fib6_nh_flush_exceptions").

We additionally need to take care of fib6_metrics initialization
failure when the caller provides an nh.

The fix is similar, explicitly free the route instead of calling
fib6_info_release on a half-initialized object.
affected: product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: f88d8ea67fbd
lessThan: 830251361425
status: affected
versionType: git
version: f88d8ea67fbd
lessThan: ce8fafb68051
status: affected
versionType: git
version: f88d8ea67fbd
lessThan: 115784bcccf1
status: affected
versionType: git
version: f88d8ea67fbd
lessThan: 8fb4792f091e
status: affected
versionType: git
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 5.3
status: affected
version: 0
lessThan: 5.3
status: unaffected
versionType: custom
version: 5.4.136
lessThanOrEqual: 5.4.*
status: unaffected
versionType: custom
version: 5.10.54
lessThanOrEqual: 5.10.*
status: unaffected
versionType: custom
version: 5.13.6
lessThanOrEqual: 5.13.*
status: unaffected
versionType: custom
version: 5.14
lessThanOrEqual: *
status: unaffected
versionType: original_commit_for_fix
title: ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
x_generator: engine: bippy-d175d3acf727