In the Linux kernel, the following vulnerability has been resolved:
nvmet: Fix crash when a namespace is disabled
The namespace percpu counter protects pending I/O, and we can only safely diable the namespace once the counter drop to zero. Otherwise we end up with a crash when running blktests/nvme/058 (eg for loop transport):
[ 2352.930426] [ T53909] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN PTI [ 2352.930431] [ T53909] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 2352.930434] [ T53909] CPU: 3 UID: 0 PID: 53909 Comm: kworker/u16:5 Tainted: G W 6.13.0-rc6 #232 [ 2352.930438] [ T53909] Tainted: [W]=WARN [ 2352.930440] [ T53909] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 [ 2352.930443] [ T53909] Workqueue: nvmet-wq nvme_loop_execute_work [nvme_loop] [ 2352.930449] [ T53909] RIP: 0010:blkcg_set_ioprio+0x44/0x180
as the queue is already torn down when calling submit_bio();
So we need to init the percpu counter in nvmet_ns_enable(), and wait for it to drop to zero in nvmet_ns_disable() to avoid having I/O pending after the namespace has been disabled.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 12, 2025 |
| Suse | — | Upgrade dtb-rockchipUpgrade gfs2-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-extraUpgrade dtb-sprdUpgrade dtb-alteraUpgrade kernel-rt_debug-vdsoUpgrade kernel-syms-rtUpgrade kernel-debug-vdsoUpgrade kernel-source-vanillaUpgrade kernel-defaultUpgrade dtb-armUpgrade kernel-rtUpgrade dtb-nvidiaUpgrade kernel-azure-vdsoUpgrade kernel-rt-optionalUpgrade kernel-rt-vdsoUpgrade kernel-rt-livepatch-develUpgrade cluster-md-kmp-64kbUpgrade dtb-qcomUpgrade kernel-syms-azureUpgrade dtb-exynosUpgrade kernel-docsUpgrade reiserfs-kmp-64kbUpgrade kernel-rt_debug-develUpgrade kernel-azure-develUpgrade kernel-macrosUpgrade kselftests-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade kselftests-kmp-azureUpgrade kernel-devel-azureUpgrade kernel-default-vdsoUpgrade kernel-kvmsmallUpgrade kernel-64kb-extraUpgrade dlm-kmp-rtUpgrade gfs2-kmp-defaultUpgrade kernel-source-rtUpgrade cluster-md-kmp-defaultUpgrade kernel-azureUpgrade kernel-sourceUpgrade reiserfs-kmp-azureUpgrade kernel-obs-buildUpgrade dtb-amlogicUpgrade kernel-kvmsmall-develUpgrade kernel-rt_debugUpgrade kernel-obs-qaUpgrade kernel-default-livepatch-develUpgrade cluster-md-kmp-azureUpgrade ocfs2-kmp-azureUpgrade kselftests-kmp-rtUpgrade kernel-docs-htmlUpgrade kernel-default-develUpgrade dtb-marvellUpgrade reiserfs-kmp-rtUpgrade dlm-kmp-defaultUpgrade kernel-symsUpgrade kernel-develUpgrade kernel-zfcpdumpUpgrade kernel-default-extraUpgrade kernel-default-baseUpgrade cluster-md-kmp-rtUpgrade dlm-kmp-azureUpgrade reiserfs-kmp-defaultUpgrade dtb-socionextUpgrade dtb-caviumUpgrade ocfs2-kmp-rtUpgrade kernel-default-optionalUpgrade dtb-freescaleUpgrade kernel-azure-extraUpgrade dtb-hisiliconUpgrade dlm-kmp-64kbUpgrade dtb-xilinxUpgrade dtb-amdUpgrade kernel-64kb-develUpgrade dtb-renesasUpgrade kernel-default-livepatchUpgrade kernel-debug-develUpgrade kernel-debugUpgrade kernel-azure-optionalUpgrade kernel-64kb-optionalUpgrade kernel-64kbUpgrade dtb-mediatekUpgrade dtb-lgUpgrade dtb-amazonUpgrade dtb-allwinnerUpgrade kselftests-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-devel-rtUpgrade kernel-rt-develUpgrade dtb-appleUpgrade dtb-apmUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-64kbUpgrade dtb-broadcomUpgrade ocfs2-kmp-64kb | Dec 5, 2025 | Jun 12, 2025 |
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