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CVE-2022-48867— dmaengine: idxd: Prevent use after free on completion memory

EPSS 0.01% · P3

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux63c14ae6c161dec8ff3be49277edc75a769e054a< b9e8e3fcfec625fc1c2f68f684448aeeb882625baffected
63c14ae6c161dec8ff3be49277edc75a769e054a< 1beeec45f9ac31eba52478379f70a5fa9c2ad005affected
5.19affected
< 5.19unaffected
6.1.8≤ 6.1.*unaffected
6.2≤ *unaffected
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I. Basic Information for CVE-2022-48867

Vulnerability Information
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Vulnerability Title
dmaengine: idxd: Prevent use after free on completion memory
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Prevent use after free on completion memory On driver unload any pending descriptors are flushed at the time the interrupt is freed: idxd_dmaengine_drv_remove() -> drv_disable_wq() -> idxd_wq_free_irq() -> idxd_flush_pending_descs(). If there are any descriptors present that need to be flushed this flow triggers a "not present" page fault as below: BUG: unable to handle page fault for address: ff391c97c70c9040 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page The address that triggers the fault is the address of the descriptor that was freed moments earlier via: drv_disable_wq()->idxd_wq_free_resources() Fix the use after free by freeing the descriptors after any possible usage. This is done after idxd_wq_reset() to ensure that the memory remains accessible during possible completion writes by the device.
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，该漏洞源于 dmaengine/idxd 组件在驱动卸载时存在使用后释放问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 63c14ae6c161dec8ff3be49277edc75a769e054a ~ b9e8e3fcfec625fc1c2f68f684448aeeb882625b -
LinuxLinux 5.19 -

II. Public POCs for CVE-2022-48867

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III. Intelligence Information for CVE-2022-48867

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Other References for CVE-2022-48867 (2)

Same Patch Batch · Linux · 2024-08-21 · 69 CVEs total

CVE-2022-48877f2fs: let's avoid panic if extent_tree is not created
CVE-2024-43874crypto: ccp - Fix null pointer dereference in __sev_snp_shutdown_locked
CVE-2024-43873vhost/vsock: always initialize seqpacket_allow
CVE-2024-43875PCI: endpoint: Clean up error handling in vpci_scan_bus()
CVE-2022-48871tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer
CVE-2022-48872misc: fastrpc: Fix use-after-free race condition for maps
CVE-2022-48873misc: fastrpc: Don't remove map on creater_process and device_release
CVE-2022-48874misc: fastrpc: Fix use-after-free and race in fastrpc_map_find
CVE-2022-48875wifi: mac80211: sdata can be NULL during AMPDU start
CVE-2022-48876wifi: mac80211: fix initialization of rx->link and rx->link_sta
CVE-2022-48870tty: fix possible null-ptr-defer in spk_ttyio_release
CVE-2022-48878Bluetooth: hci_qca: Fix driver shutdown on closed serdev
CVE-2022-48879efi: fix NULL-deref in init error path
CVE-2022-48880platform/surface: aggregator: Add missing call to ssam_request_sync_free()
CVE-2022-48881platform/x86/amd: Fix refcount leak in amd_pmc_probe
CVE-2022-48882net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY)
CVE-2022-48883net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent
CVE-2022-48884net/mlx5: Fix command stats access after free
CVE-2022-48885ice: Fix potential memory leak in ice_gnss_tty_write()
CVE-2022-48886ice: Add check for kzalloc

Showing top 20 of 69 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48867

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