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CVE-2024-42272

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : 88c67aeb14070bab61d3dd8be96c8b42ebcaf53a, <=6.1.*, <6.6.45, 2f82f75f843445daa81e8b2a76774b1348033ce6, <3ddefcb8f75e312535e2e7d5fef9932019ba60f2, 6.10, 5.15.165, <d06daf0ad645d9225a3ff6958dd82e1f3988fa64, 0, <5.10.224, <6.10, <3a5b68869dbe14f1157c6a24ac71923db060eeab, aa1f81fe3a059bc984b230b5352ab89d06aa3c7b, <6.1.104, <d7cc186d0973afce0e1237c37f7512c01981fb79, <=5.10.*, <=6.6.*, 6.6.36, 6.9.7, 6.1.104, 5.15.162, <7c03ab555eb1ba26c77fd7c25bdf44a0ac23edee, 5.10.221, <2191a54f63225b548fd8346be3611c3219a24738, b4382b854975ae96fbfcc83a1d79b5c063c1aaa8, 5.10.224, 6.10.4, 9126fd82e9edc7b4796f756e4b258d34f17e5e4a, 6.11, 6.1.96, 03f625505e27f709390a86c9b78d3707f4c23df8, 6.6.45, <=*, <=5.15.*, <5.15.165, <=6.10.*

Description

In the Linux kernel, the following vulnerability has been resolved: sched: act_ct: take care of padding in struct zones_ht_key Blamed commit increased lookup key size from 2 bytes to 16 bytes, because zones_ht_key got a struct net pointer. Make sure rhashtable_lookup() is not using the padding bytes which are not initialized. BUG: KMSAN: uninit-value in rht_ptr_rcu include/linux/rhashtable.h:376 [inline] BUG: KMSAN: uninit-value in __rhashtable_lookup include/linux/rhashtable.h:607 [inline] BUG: KMSAN: uninit-value in rhashtable_lookup include/linux/rhashtable.h:646 [inline] BUG: KMSAN: uninit-value in rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline] BUG: KMSAN: uninit-value in tcf_ct_flow_table_get+0x611/0x2260 net/sched/act_ct.c:329 rht_ptr_rcu include/linux/rhashtable.h:376 [inline] __rhashtable_lookup include/linux/rhashtable.h:607 [inline] rhashtable_lookup include/linux/rhashtable.h:646 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline] tcf_ct_flow_table_get+0x611/0x2260 net/sched/act_ct.c:329 tcf_ct_init+0xa67/0x2890 net/sched/act_ct.c:1408 tcf_action_init_1+0x6cc/0xb30 net/sched/act_api.c:1425 tcf_action_init+0x458/0xf00 net/sched/act_api.c:1488 tcf_action_add net/sched/act_api.c:2061 [inline] tc_ctl_action+0x4be/0x19d0 net/sched/act_api.c:2118 rtnetlink_rcv_msg+0x12fc/0x1410 net/core/rtnetlink.c:6647 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2550 rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6665 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2597 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2651 __sys_sendmsg net/socket.c:2680 [inline] __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2687 x64_sys_call+0x2dd6/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable key created at: tcf_ct_flow_table_get+0x4a/0x2260 net/sched/act_ct.c:324 tcf_ct_init+0xa67/0x2890 net/sched/act_ct.c:1408

Gravité et risque d'exploitation

CVE-2024-42272 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.24 %, ce qui la place devant 14.3 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 88c67aeb14070bab61d3dd8be96c8b42ebcaf53a, <=6.1.*, <6.6.45, 2f82f75f843445daa81e8b2a76774b1348033ce6, <3ddefcb8f75e312535e2e7d5fef9932019ba60f2, 6.10, 5.15.165, <d06daf0ad645d9225a3ff6958dd82e1f3988fa64, 0, <5.10.224, <6.10, <3a5b68869dbe14f1157c6a24ac71923db060eeab, aa1f81fe3a059bc984b230b5352ab89d06aa3c7b, <6.1.104, <d7cc186d0973afce0e1237c37f7512c01981fb79, <=5.10.*, <=6.6.*, 6.6.36, 6.9.7, 6.1.104, 5.15.162, <7c03ab555eb1ba26c77fd7c25bdf44a0ac23edee, 5.10.221, <2191a54f63225b548fd8346be3611c3219a24738, b4382b854975ae96fbfcc83a1d79b5c063c1aaa8, 5.10.224, 6.10.4, 9126fd82e9edc7b4796f756e4b258d34f17e5e4a, 6.11, 6.1.96, 03f625505e27f709390a86c9b78d3707f4c23df8, 6.6.45, <=*, <=5.15.*, <5.15.165, <=6.10.*) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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