CVSS
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Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: ipv4: avoid divide by zero in fib_rebalance fib_rebalance() computes the total eligible nexthop weight in one pass and programs upper bounds in a second pass. A concurrent change to ignore_routes_with_linkdown can make the first pass return zero while the second pass sees an eligible nexthop, resulting in division by zero. If the first pass reports a zero total, set each nexthop upper bound to -1 and skip the division. This matches the IPv6 fix in commit d2c26c2911dd ("ipv6: avoid divide by zero in rt6_multipath_rebalance") and preserves the lock-free rebalance path.
Засегнати продукти
- Linux Linux: 0e884c78ee19e902f300ed147083c28a0c6302f0 преди baf3a767b2845eb8e68f056ee4aa5b41b151e990; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди f655a26490e705ec76a79db7f412847fda342b39; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди 7c68f4de5090b17b63b9a0a3b01b3807e01a296a; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди 226a974054acbd892560bfa67f0ae8ffe271a736; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди 0800c92ca5d1983df6843a5435299978901d1d02; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди 5dac5c7ba8f5f3fb4bf29f2a2c3cb552f5b83c8f; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди d5520e815c4b1427104ce1428ee23821f2aa824d; 0e884c78ee19e902f300ed147083c28a0c6302f0 преди 5046d2880fec7d49ebed2fd2866747ee1d06ad71
- Linux Linux: 4.4; преди 4.4; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък
История
- 28 октомври 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-99121
- https://nvd.nist.gov/vuln/detail/CVE-2026-99121
- https://git.kernel.org/stable/c/baf3a767b2845eb8e68f056ee4aa5b41b151e990
- https://git.kernel.org/stable/c/f655a26490e705ec76a79db7f412847fda342b39
- https://git.kernel.org/stable/c/7c68f4de5090b17b63b9a0a3b01b3807e01a296a
- https://git.kernel.org/stable/c/226a974054acbd892560bfa67f0ae8ffe271a736
- https://git.kernel.org/stable/c/0800c92ca5d1983df6843a5435299978901d1d02
- https://git.kernel.org/stable/c/5dac5c7ba8f5f3fb4bf29f2a2c3cb552f5b83c8f
- https://git.kernel.org/stable/c/d5520e815c4b1427104ce1428ee23821f2aa824d
- https://git.kernel.org/stable/c/5046d2880fec7d49ebed2fd2866747ee1d06ad71