Описание
Critical: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
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kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419)
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kernel: Linux kernel: Denial of Service in erofs filesystem (CVE-2026-31467)
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kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)
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kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581)
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kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037)
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kernel: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (CVE-2026-43501)
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kernel: selinux: fix overlayfs mmap() and mprotect() access checks (CVE-2026-46054)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Затронутые продукты
Rocky Linux 10
Ссылки на источники
Исправления
- Red Hat - 2461107
- Red Hat - 2480457
- Red Hat - 2460616
- Red Hat - 2464351
- Red Hat - 2457829
- Red Hat - 2461471
- Red Hat - 2482025
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() Oskar Kjos reported the following problem. ip4ip6_err() calls icmp_send() on a cloned skb whose cb[] was written by the IPv6 receive path as struct inet6_skb_parm. icmp_send() passes IPCB(skb2) to __ip_options_echo(), which interprets that cb[] region as struct inet_skb_parm (IPv4). The layouts differ: inet6_skb_parm.nhoff at offset 14 overlaps inet_skb_parm.opt.rr, producing a non-zero rr value. __ip_options_echo() then reads optlen from attacker-controlled packet data at sptr[rr+1] and copies that many bytes into dopt->__data, a fixed 40-byte stack buffer (IP_OPTIONS_DATA_FIXED_SIZE). To fix this we clear skb2->cb[], as suggested by Oskar Kjos. Also add minimal IPv4 header validation (version == 4, ihl >= 5).