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In the Linux kernel, the following vulnerability has been resolved:
perf/core: Add RCU read lock protection to perf_iterate_ctx()
The perf_iterate_ctx() function performs RCU list traversal but currently lacks RCU read lock protection. This causes lockdep warnings when running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y:
WARNING: suspicious RCU usage kernel/events/core.c:8168 RCU-list traversed in non-reader section!!
Call Trace: lockdep_rcu_suspicious ? perf_event_addr_filters_apply perf_iterate_ctx perf_event_exec begin_new_exec ? load_elf_phdrs load_elf_binary ? lock_acquire ? find_held_lock ? bprm_execve bprm_execve do_execveat_common.isra.0 __x64_sys_execve do_syscall_64 entry_SYSCALL_64_after_hwframe
This protection was previously present but was removed in commit bd2756811766 ("perf: Rewrite core context handling"). Add back the necessary rcu_read_lock()/rcu_read_unlock() pair around perf_iterate_ctx() call in perf_event_exec().
[ mingo: Use scoped_guard() as suggested by Peter ]
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 27, 2025 |
| Suse | — | Upgrade gfs2-kmp-defaultUpgrade dlm-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade dtb-nvidiaUpgrade dlm-kmp-rtUpgrade dtb-broadcomUpgrade kernel-64kb-optionalUpgrade kernel-azure-vdsoUpgrade kernel-docs-htmlUpgrade kernel-defaultUpgrade reiserfs-kmp-defaultUpgrade reiserfs-kmp-rtUpgrade cluster-md-kmp-64kbUpgrade kernel-syms-rtUpgrade dtb-amdUpgrade kernel-source-vanillaUpgrade dtb-hisiliconUpgrade kernel-64kb-develUpgrade kselftests-kmp-rtUpgrade kernel-default-livepatch-develUpgrade kernel-rt-extraUpgrade dtb-sprdUpgrade kernel-docsUpgrade kernel-rt-livepatch-develUpgrade dtb-renesasUpgrade kernel-azure-extraUpgrade kernel-debug-develUpgrade kernel-kvmsmall-vdsoUpgrade ocfs2-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade dlm-kmp-defaultUpgrade kernel-rt_debug-vdsoUpgrade kernel-64kb-extraUpgrade kernel-rt_debugUpgrade kernel-azureUpgrade dtb-armUpgrade dtb-socionextUpgrade dtb-appleUpgrade kernel-default-baseUpgrade kselftests-kmp-defaultUpgrade kernel-debug-vdsoUpgrade kernel-obs-buildUpgrade kernel-debugUpgrade dtb-marvellUpgrade kernel-macrosUpgrade kernel-develUpgrade dlm-kmp-64kbUpgrade kernel-default-optionalUpgrade kernel-devel-azureUpgrade kernel-azure-develUpgrade kernel-devel-rtUpgrade dtb-amlogicUpgrade kernel-source-azureUpgrade kernel-sourceUpgrade kernel-default-base-rebuildUpgrade dtb-lgUpgrade dtb-amazonUpgrade kernel-default-develUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-azureUpgrade kernel-64kbUpgrade dtb-xilinxUpgrade gfs2-kmp-64kbUpgrade dtb-allwinnerUpgrade dtb-qcomUpgrade dtb-apmUpgrade kernel-zfcpdumpUpgrade dtb-alteraUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-azureUpgrade dtb-freescaleUpgrade kernel-symsUpgrade kernel-kvmsmall-develUpgrade kernel-default-vdsoUpgrade dtb-rockchipUpgrade kernel-source-rtUpgrade cluster-md-kmp-rtUpgrade reiserfs-kmp-azureUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-64kbUpgrade kernel-rt_debug-develUpgrade kernel-rtUpgrade kernel-kvmsmallUpgrade kernel-default-livepatchUpgrade kernel-default-extraUpgrade dtb-mediatekUpgrade cluster-md-kmp-azureUpgrade dtb-exynosUpgrade dtb-caviumUpgrade kernel-rt-vdsoUpgrade kernel-rt-optionalUpgrade kernel-obs-qaUpgrade kernel-azure-optionalUpgrade ocfs2-kmp-64kbUpgrade kernel-syms-azureUpgrade kernel-rt-devel | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-kvmUpgrade linux-image-oem-24.04bUpgrade linux-image-ibm-6.8Upgrade linux-image-6.11.0-1016-oracle-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-6.8.0-1039-nvidia-64kUpgrade linux-image-6.8.0-84-lowlatencyUpgrade linux-image-awsUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-85-generic-64kUpgrade linux-image-6.8.0-1036-gke-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-84-genericUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-oracleUpgrade linux-image-6.8.0-84-generic-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-85-genericUpgrade linux-image-6.8.1-1034-realtimeUpgrade linux-image-6.8.0-1037-oracleUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gcp-6.8Upgrade linux-image-azure-fde-6.8Upgrade linux-image-6.11.0-1016-oracleUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-virtualUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-gcpUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1014-lowlatencyUpgrade linux-image-6.8.0-84-lowlatency-64kUpgrade linux-image-azure-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1038-azureUpgrade linux-image-gkeop-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1039-nvidia-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.11.0-1015-azureUpgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-6.11.0-26-generic-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.11.0-26-genericUpgrade linux-image-6.11.0-1015-gcpUpgrade linux-image-6.8.0-1036-azure-fdeUpgrade linux-image-6.11.0-1013-raspiUpgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1039-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1036-gkeUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1039-nvidiaUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1023-gkeopUpgrade linux-image-genericUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-gkeopUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.11.0-1014-awsUpgrade linux-image-6.11.0-1010-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1040-gcpUpgrade linux-image-oracle-6.8Upgrade linux-image-generic-64kUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.11.0-1022-oemUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.8.0-1037-oracle-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1037-ibmUpgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.11.0-1015-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-6.8.0-2031-raspi-realtimeUpgrade linux-image-6.8.0-1040-gcp-64kUpgrade linux-image-nvidiaUpgrade linux-image-azureUpgrade linux-image-oracle-64kUpgrade linux-image-gke-64kUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-1039-raspiUpgrade linux-image-azure-fdeUpgrade linux-image-virtual-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1039-aws-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1038-azure-fdeUpgrade linux-image-6.11.0-1015-azure-fdeUpgrade linux-image-6.8.0-1039-awsUpgrade linux-image-gke-6.8Upgrade linux-image-azure-nvidia-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-oem-22.04aUpgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-6.8.0-1036-azureUpgrade linux-image-lowlatency-64kUpgrade linux-image-ibmUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-6.11.0-1014-lowlatency-64kUpgrade linux-image-6.8.0-1025-azure-nvidia | May 21, 2025 | Mar 27, 2025 |
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