CVE-2021-47291

설명

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.

영향 제품·버전

제품 Linux Linux, linux kernel

영향 버전 Linux Linux, linux kernel >= f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 < 830251361425c5be044db4d826aaf304ea3d14c6, >= f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 < ce8fafb68051fba52546f8bbe8621f7641683680, >= f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 < 115784bcccf135c3a3548098153413d76f16aae0, >= f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 < 8fb4792f091e608a0a1d353dfdf07ef55a719db5, >= 5.3, >= 5.3 < 5.4.136, >= 5.5 < 5.10.54, >= 5.11 < 5.13.6, 5.14

수정 버전 Linux Linux, linux kernel 5.4.136, 5.10.54, 5.13.6

기술 정보

CVSS 벡터 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE CWE-125