CVE-2022-48658— mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.
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I. Basic Information for CVE-2022-48658
Vulnerability Information
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Vulnerability Title
mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context. Commit 5a836bf6b09f ("mm: slub: move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context") moved all flush_cpu_slab() invocations to the global workqueue to avoid a problem related with deactivate_slab()/__free_slab() being called from an IRQ context on PREEMPT_RT kernels. When the flush_all_cpu_locked() function is called from a task context it may happen that a workqueue with WQ_MEM_RECLAIM bit set ends up flushing the global workqueue, this will cause a dependency issue. workqueue: WQ_MEM_RECLAIM nvme-delete-wq:nvme_delete_ctrl_work [nvme_core] is flushing !WQ_MEM_RECLAIM events:flush_cpu_slab WARNING: CPU: 37 PID: 410 at kernel/workqueue.c:2637 check_flush_dependency+0x10a/0x120 Workqueue: nvme-delete-wq nvme_delete_ctrl_work [nvme_core] RIP: 0010:check_flush_dependency+0x10a/0x120[ 453.262125] Call Trace: __flush_work.isra.0+0xbf/0x220 ? __queue_work+0x1dc/0x420 flush_all_cpus_locked+0xfb/0x120 __kmem_cache_shutdown+0x2b/0x320 kmem_cache_destroy+0x49/0x100 bioset_exit+0x143/0x190 blk_release_queue+0xb9/0x100 kobject_cleanup+0x37/0x130 nvme_fc_ctrl_free+0xc6/0x150 [nvme_fc] nvme_free_ctrl+0x1ac/0x2b0 [nvme_core] Fix this bug by creating a workqueue for the flush operation with the WQ_MEM_RECLAIM bit set.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-48658
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Same Patch Batch · Linux · 2024-04-28 · 40 CVEs total
| CVE-2022-48638 | cgroup: cgroup_get_from_id() must check the looked-up kn is a directory | |
| CVE-2022-48647 | sfc: fix TX channel offset when using legacy interrupts | |
| CVE-2022-48646 | sfc/siena: fix null pointer dereference in efx_hard_start_xmit | |
| CVE-2022-48645 | net: enetc: deny offload of tc-based TSN features on VF interfaces | |
| CVE-2022-48644 | net/sched: taprio: avoid disabling offload when it was never enabled | |
| CVE-2022-48643 | netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() | |
| CVE-2022-48642 | netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain() | |
| CVE-2022-48641 | netfilter: ebtables: fix memory leak when blob is malformed | |
| CVE-2022-48640 | bonding: fix NULL deref in bond_rr_gen_slave_id | |
| CVE-2022-48639 | net: sched: fix possible refcount leak in tc_new_tfilter() | |
| CVE-2022-48648 | sfc: fix null pointer dereference in efx_hard_start_xmit | |
| CVE-2022-48637 | bnxt: prevent skb UAF after handing over to PTP worker | |
| CVE-2022-48636 | s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup | |
| CVE-2022-48635 | fsdax: Fix infinite loop in dax_iomap_rw() | |
| CVE-2022-48634 | drm/gma500: Fix BUG: sleeping function called from invalid context errors | |
| CVE-2022-48633 | drm/gma500: Fix WARN_ON(lock->magic != lock) error | |
| CVE-2022-48632 | i2c: mlxbf: prevent stack overflow in mlxbf_i2c_smbus_start_transaction() | |
| CVE-2022-48631 | ext4: fix bug in extents parsing when eh_entries == 0 and eh_depth > 0 | |
| CVE-2024-26928 | smb: client: fix potential UAF in cifs_debug_files_proc_show() | |
| CVE-2024-26927 | ASoC: SOF: Add some bounds checking to firmware data |
Showing top 20 of 40 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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