CVE-2022-48987— media: v4l2-dv-timings.c: fix too strict blanking sanity checks
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 15
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 15ded23db134da975b49ea99770de0346c193b24< 0d73b49c4037199472b29574ae21c21aef493971 | affected |
3d43b2b8a3cdadd6cef9ac8ef5d156b6214a01c8< a2b56627c0d13009e02f6f2c0206c0451ed19a0e | affected | ||
9cf9211635b68e8e0c8cb88d43ca7dc83e4632aa< 2572ab14b73aa45b6ae7e4c089ccf119fed5cf89 | affected | ||
b4a3a01762ae072c7f6ff2ff53b5019761288346< 4afc77068e36cee45b39d4fdc7513de26980f72c | affected | ||
683015ae163481457a16fad2317af66360dc4762< 32f01f0306a98629508f84d7ef0d1d037bc274a2 | affected | ||
491c0959f01d87bcbd5a1498bc70e0a3382c65a8< 6fb8bc29bfa80707994a63cc97e2f9920e0b0608 | affected | ||
dc7276c3f6ca008be1faf531f84b49906c9bcf7f< d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3 | affected | ||
4b6d66a45ed34a15721cb9e11492fa1a24bc83df< 5eef2141776da02772c44ec406d6871a790761ee | affected | ||
| … +7 more rows | |||
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I. Basic Information for CVE-2022-48987
Vulnerability Information
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Vulnerability Title
media: v4l2-dv-timings.c: fix too strict blanking sanity checks
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values. But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields. And that can fail with these checks. So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that. That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.
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media子系统v4l2-dv-timings.c中的过于严格的空白检查问题。
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
II. Public POCs for CVE-2022-48987
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-48987 (1)
Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total
| CVE-2024-50017 | x86/mm/ident_map: Use gbpages only where full GB page should be mapped. | |
| CVE-2024-50028 | thermal: core: Reference count the zone in thermal_zone_get_by_id() | |
| CVE-2024-50029 | Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync | |
| CVE-2024-50027 | thermal: core: Free tzp copy along with the thermal zone | |
| CVE-2024-50025 | scsi: fnic: Move flush_work initialization out of if block | |
| CVE-2024-50026 | scsi: wd33c93: Don't use stale scsi_pointer value | |
| CVE-2024-50023 | net: phy: Remove LED entry from LEDs list on unregister | |
| CVE-2024-50024 | net: Fix an unsafe loop on the list | |
| CVE-2024-50022 | device-dax: correct pgoff align in dax_set_mapping() | |
| CVE-2024-50021 | ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() | |
| CVE-2024-50020 | ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count() | |
| CVE-2024-50019 | kthread: unpark only parked kthread | |
| CVE-2024-50010 | exec: don't WARN for racy path_noexec check | |
| CVE-2024-50005 | mac802154: Fix potential RCU dereference issue in mac802154_scan_worker | |
| CVE-2024-50006 | ext4: fix i_data_sem unlock order in ext4_ind_migrate() | |
| CVE-2024-50007 | ALSA: asihpi: Fix potential OOB array access | |
| CVE-2024-50008 | wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext() | |
| CVE-2024-50009 | cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value | |
| CVE-2024-50013 | exfat: fix memory leak in exfat_load_bitmap() | |
| CVE-2024-50015 | ext4: dax: fix overflowing extents beyond inode size when partially writing |
Showing top 20 of 372 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-64206
Bluetooth: L2CAP: cancel pending_rx_work before taking conn- - CVE-2026-64207
net/sched: dualpi2: fix GSO backlog accounting - CVE-2026-64205
i2c: i801: fix hardware state machine corruption in error pa - CVE-2026-64192
bpf: Reject BPF_MAP_TYPE_INODE_STORAGE creation if BPF LSM i - CVE-2026-64191
i2c: stub: Reject I2C block transfers with invalid length
Same vendor: Linux
- CVE-2026-64206
Bluetooth: L2CAP: cancel pending_rx_work before taking conn- - CVE-2026-64207
net/sched: dualpi2: fix GSO backlog accounting - CVE-2026-64205
i2c: i801: fix hardware state machine corruption in error pa - CVE-2026-64192
bpf: Reject BPF_MAP_TYPE_INODE_STORAGE creation if BPF LSM i - CVE-2026-64191
i2c: stub: Reject I2C block transfers with invalid length
V. Comments for CVE-2022-48987
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