CVE-2021-47291 (GCVE-0-2021-47291)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2025-05-04 07:07
VLAI?
Title
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 , < 830251361425c5be044db4d826aaf304ea3d14c6 (git)
Affected: f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 , < ce8fafb68051fba52546f8bbe8621f7641683680 (git)
Affected: f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 , < 115784bcccf135c3a3548098153413d76f16aae0 (git)
Affected: f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 , < 8fb4792f091e608a0a1d353dfdf07ef55a719db5 (git)
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    Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.4.136 , ≤ 5.4.* (semver)
Unaffected: 5.10.54 , ≤ 5.10.* (semver)
Unaffected: 5.13.6 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
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