CVE-2022-50274— media: dvbdev: adopts refcnt to avoid UAF
Possible ATT&CK Techniques 1AI
T1211 · Exploitation for StealthAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ac521bbe3d00fa574e66a9361763f2b37725bc97 | affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 219b44bf94203bd433aa91b7796475bf656348e5 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2abd73433872194bccdf1432a0980e4ec5273c2a | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 88a6f8a72d167294c0931c7874941bf37a41b6dd | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< a2f0a08aa613176c9688c81d7b598a7779974991 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9945d05d6693710574f354c5dbddc47f5101eb77 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2022-50274
Vulnerability Information
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Vulnerability Title
media: dvbdev: adopts refcnt to avoid UAF
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.
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，该漏洞源于未正确管理引用计数，可能导致释放后重用。
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-2022-50274
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total
| CVE-2022-50293 | btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range | |
| CVE-2023-53232 | mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data | |
| CVE-2023-53233 | net/smc: fix deadlock triggered by cancel_delayed_work_syn() | |
| CVE-2023-53234 | watchdog: Fix kmemleak in watchdog_cdev_register | |
| CVE-2023-53235 | drm/tests: helpers: Avoid a driver uaf | |
| CVE-2023-53236 | iommufd: Do not corrupt the pfn list when doing batch carry | |
| CVE-2023-53237 | drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini | |
| CVE-2023-53238 | phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe() | |
| CVE-2023-53239 | drm/msm/mdp5: Add check for kzalloc | |
| CVE-2023-53240 | xsk: check IFF_UP earlier in Tx path | |
| CVE-2023-53241 | nfsd: call op_release, even when op_func returns an error | |
| CVE-2023-53242 | thermal/drivers/hisi: Drop second sensor hi3660 | |
| CVE-2022-50291 | kcm: annotate data-races around kcm->rx_psock | |
| CVE-2022-50292 | drm/msm/dp: fix bridge lifetime | |
| CVE-2022-50303 | drm/amdkfd: Fix double release compute pasid | |
| CVE-2022-50300 | btrfs: fix extent map use-after-free when handling missing device in read_one_chunk | |
| CVE-2022-50301 | iommu/omap: Fix buffer overflow in debugfs | |
| CVE-2022-50302 | lockd: set other missing fields when unlocking files | |
| CVE-2022-50299 | md: Replace snprintf with scnprintf | |
| CVE-2022-50304 | mtd: core: fix possible resource leak in init_mtd() |
Showing top 20 of 210 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
Same vendor: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
V. Comments for CVE-2022-50274
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