In the Linux kernel, the following vulnerability has been resolved:
kprobes: avoid crash when rmmod/insmod after ftrace killed
After we hit ftrace is killed by some errors, the kernel crash if we remove modules in which kprobe probes.
BUG: unable to handle page fault for address: fffffbfff805000d PGD 817fcc067 P4D 817fcc067 PUD 817fc8067 PMD 101555067 PTE 0 Oops: Oops: 0000 [#1] SMP KASAN PTI CPU: 4 UID: 0 PID: 2012 Comm: rmmod Tainted: G W OE Tainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE RIP: 0010:kprobes_module_callback+0x89/0x790 RSP: 0018:ffff88812e157d30 EFLAGS: 00010a02 RAX: 1ffffffff805000d RBX: dffffc0000000000 RCX: ffffffff86a8de90 RDX: ffffed1025c2af9b RSI: 0000000000000008 RDI: ffffffffc0280068 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1025c2af9a R10: ffff88812e157cd7 R11: 205d323130325420 R12: 0000000000000002 R13: ffffffffc0290488 R14: 0000000000000002 R15: ffffffffc0280040 FS: 00007fbc450dd740(0000) GS:ffff888420331000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff805000d CR3: 000000010f624000 CR4: 00000000000006f0 Call Trace: <TASK> notifier_call_chain+0xc6/0x280 blocking_notifier_call_chain+0x60/0x90 __do_sys_delete_module.constprop.0+0x32a/0x4e0 do_syscall_64+0x5d/0xfa0 entry_SYSCALL_64_after_hwframe+0x76/0x7e
This is because the kprobe on ftrace does not correctly handles the kprobe_ftrace_disabled flag set by ftrace_kill().
To prevent this error, check kprobe_ftrace_disabled in __disarm_kprobe_ftrace() and skip all ftrace related operations.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | May 8, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-gke-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-6.8.0-1061-awsUpgrade linux-image-azureUpgrade linux-image-fipsUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-aws-fipsUpgrade linux-image-azure-fipsUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-ibmUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-generic-64k-6.8Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oracleUpgrade linux-image-awsUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-virtual-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-gcp-fipsUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-azure-lts-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-aws-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-laptop-23.10Upgrade linux-image-virtualUpgrade linux-image-raspi-realtimeUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-gkeop-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64kUpgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-gkeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-oem-20.04Upgrade linux-image-genericUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-64kUpgrade linux-image-azure-fde-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-intel-iotgUpgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-gke-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-oracle-64kUpgrade linux-image-gcpUpgrade linux-image-gke-64k-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-gkeopUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-realtimeUpgrade linux-image-oem-22.04bUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-oem-20.04bUpgrade linux-image-fips-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-xilinxUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia | Jul 21, 2026 | Jul 20, 2026 |
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