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CVE-2026-23273: Linux, състезание за ресурс

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: macvlan: observe an RCU grace period in macvlan_common_newlink() error path valis reported that a race condition still happens after my prior patch. macvlan_common_newlink() might have made @dev visible before detecting an error, and its caller will directly call free_netdev(dev). We must respect an RCU period, either in macvlan or the core networking stack. After adding a temporary mdelay(1000) in macvlan_forward_source_one() to open the race window, valis repro was: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip link add mv0 link p2 type macvlan mode source (ip link add invalid% link p2 type macvlan mode source macaddr add 00:00:00:00:00:20 &) ; sleep 0.5 ; ping -c1 -I p1 1.2.3.4 PING 1.2.3.4 (1.2.3.4): 56 data bytes RTNETLINK answers: Invalid argument BUG: KASAN: slab-use-after-free in macvlan_forward_source (drivers/net/macvlan.c:408 drivers/net/macvlan.c:444) Read of size 8 at addr ffff888016bb89c0 by task e/175 CPU: 1 UID: 1000 PID: 175 Comm: e Not tainted 6.19.0-rc8+ #33 NONE Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014 Call Trace: <IRQ> dump_stack_lvl (lib/dump_stack.c:123) print_report (mm/kasan/report.c:379 mm/kasan/report.c:482) ? macvlan_forward_source (drivers/net/macvlan.c:408 drivers/net/macvlan.c:444) kasan_report (mm/kasan/report.c:597) ? macvlan_forward_source (drivers/net/macvlan.c:408 drivers/net/macvlan.c:444) macvlan_forward_source (drivers/net/macvlan.c:408 drivers/net/macvlan.c:444) ? tasklet_init (kernel/softirq.c:983) macvlan_handle_frame (drivers/net/macvlan.c:501) Allocated by task 169: kasan_save_stack (mm/kasan/common.c:58) kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:70 mm/kasan/common.c:79) __kasan_kmalloc (mm/kasan/common.c:419) __kvmalloc_node_noprof (./include/linux/kasan.h:263 mm/slub.c:5657 mm/slub.c:7140) alloc_net

Засегнати продукти

  • Linux Linux: da5c6b8ae47e414be47e5e04def15b25d5c962dc преди 91e4ff8d966978901630fc29582c1a76d3c6e46c; 5dae6b36a7cb7a4fcf4121b95e9ca7f96f816c8a преди 3d94323c80d7fc4da5f10f9bb06a45d39d5d3cc4; c43d0e787cbba569ec9d11579ed370b50fab6c9c преди 721eb342d9ba19bad5c4815ea3921465158b7362; 11ba9f0dc865136174cb98834280fb21bbc950c7 преди 19c7d8ac51988d053709c1e85bd8482076af845d; 986967a162142710076782d5b93daab93a892980 преди a1f686d273d129b45712d95f4095843b864466bd; cdedcd5aa3f3cb8b7ae0f87ab3a936d0bd583d66 преди d34f7a8aa9a25b7e64e0e46e444697c0f702374d; f8db6475a83649689c087a8f52486fcc53e627e9 преди 1e58ae87ad1e6e24368dea9aec9048c758cd0e2b; f8db6475a83649689c087a8f52486fcc53e627e9 преди e3f000f0dee1bfab52e2e61ca6a3835d9e187e35; 5.10.250 преди 5.10.252; 5.15.200 преди 5.15.202; 6.1.163 преди 6.1.165; 6.6.124 преди 6.6.128; 6.12.70 преди 6.12.75; 6.18.10 преди 6.18.14
  • Linux Linux: 6.19; преди 6.19; 5.10.252 до 5.10.*; 5.15.202 до 5.15.*; 6.1.165 до 6.1.*; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.14 до 6.18.*; 6.19.4 до 6.19.*; от 7.0 нататък
  • Siemens: още 4 продукта, добавени от Siemens

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Вид слабост

История

  • 20 март 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-23273: Linux, състезание за ресурс | freedomonline.bg