CVE-2024-42272

MEDIUM EPSS 14.1%
Published Aug 17, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published Aug 17, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-908

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.10.221  –  <5.10.224
linuxlinux_kernel*≥5.15.162  –  <5.15.165
linuxlinux_kernel*≥6.1.96  –  <6.1.104
linuxlinux_kernel*≥6.6.36  –  <6.6.45
linuxlinux_kernel*≥6.9.7  –  <6.10
linuxlinux_kernel*≥6.10  –  <6.10.4
linuxlinux_kernel6.11any

References 9

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • git.kernel.org https://git.kernel.org/stable/c/2191a54f63225b548fd8346be3611c3219a24738
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a5b68869dbe14f1157c6a24ac71923db060eeab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ddefcb8f75e312535e2e7d5fef9932019ba60f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c03ab555eb1ba26c77fd7c25bdf44a0ac23edee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d06daf0ad645d9225a3ff6958dd82e1f3988fa64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7cc186d0973afce0e1237c37f7512c01981fb79
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2191a54f63225b548fd8346be3611c3219a24738
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a5b68869dbe14f1157c6a24ac71923db060eeab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ddefcb8f75e312535e2e7d5fef9932019ba60f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c03ab555eb1ba26c77fd7c25bdf44a0ac23edee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d06daf0ad645d9225a3ff6958dd82e1f3988fa64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7cc186d0973afce0e1237c37f7512c01981fb79
    Patch