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CVE-2021-47291

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 before 830251361425c5be044db4d826aaf304ea3d14c6; affected f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 before ce8fafb68051fba52546f8bbe8621f7641683680; affected f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 before 115784bcccf135c3a3548098153413d76f16aae0; affected f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 before 8fb4792f091e608a0a1d353dfdf07ef55a719db5
Linux / Linuxaffected 5.3; unaffected 0 before 5.3; unaffected 5.4.136 through 5.4.*; unaffected 5.10.54 through 5.10.*; unaffected 5.13.6 through 5.13.*; unaffected 5.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.