CVE-2021-47645
Detail
Modified After Enrichment This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
In the Linux kernel, the following vulnerability has been resolved:
media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com
On the case tmp_dcim=1, the index of buffer is miscalculated.
This generate a NULL pointer dereference later.
So let's fix the calcul and add a check to prevent this to reappear.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-476
NULL Pointer Dereference
NIST
CISA-ADP
Change History
7 change records found show changes
CVE Modified by kernel.org
8/10/2026 11:17:33 PM
Action
Type
Old Value
New Value
Removed
Reference
https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207
Removed
Reference Type
https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 Types: Patch
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"8dce4b265a5357731058f69645840dabc718c687","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"20db2ed1e2f9fcd417fa67853e5154f0c2537d6c","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"20811bbe685ca3eddd34b0c750860427d7030910","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"e3b86f4e558cea9eed71d894df2f19b10d60a207","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.12","status":"affected"},{"version":"5.10","status":"affected"},{"version":"0","lessThan":"2.6.12","versionType":"semver","status":"unaffected"},{"version":"5.2","lessThan":"5.10","versionType":"semver","status":"unaffected"},{"version":"5.10.110","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.33","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"5.16.19","lessThanOrEqual":"5.16.*","versionType":"semver","status":"unaffected"},{"version":"5.17.2","lessThanOrEqual":"5.17.*","versionType":"semver","status":"unaffected"},{"version":"5.18","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"83f89a8bcbc3c520a889b5fc7c4b95669d712f65","lessThan":"8dce4b265a5357731058f69645840dabc718c687","versionType":"git","status":"affected"},{"version":"83f89a8bcbc3c520a889b5fc7c4b95669d712f65","lessThan":"bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e","versionType":"git","status":"affected"},{"version":"83f89a8bcbc3c520a889b5fc7c4b95669d712f65","lessThan":"7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52","versionType":"git","status":"affected"},{"version":"83f89a8bcbc3c520a889b5fc7c4b95669d712f65","lessThan":"20db2ed1e2f9fcd417fa67853e5154f0c2537d6c","versionType":"git","status":"affected"},{"version":"83f89a8bcbc3c520a889b5fc7c4b95669d712f65","lessThan":"20811bbe685ca3eddd34b0c750860427d7030910","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","versionType":"semver","status":"unaffected"},{"version":"5.2","lessThan":"5.10","versionType":"semver","status":"unaffected"},{"version":"5.10.110","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.33","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"5.16.19","lessThanOrEqual":"5.16.*","versionType":"semver","status":"unaffected"},{"version":"5.17.2","lessThanOrEqual":"5.17.*","versionType":"semver","status":"unaffected"}]}]
CVE Modified by CISA-ADP
6/17/2026 12:18:14 AM
Action
Type
Old Value
New Value
Added
SSVC
{"timestamp":"2025-10-01T19:50:33.182211Z","id":"CVE-2021-47645","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
CVE Modified by kernel.org
6/17/2026 12:18:14 AM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"8dce4b265a5357731058f69645840dabc718c687","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"20db2ed1e2f9fcd417fa67853e5154f0c2537d6c","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"20811bbe685ca3eddd34b0c750860427d7030910","versionType":"git","status":"affected"},{"version":"61c3b19f7b9eb7c7838fd35f86566230fefd6550","lessThan":"e3b86f4e558cea9eed71d894df2f19b10d60a207","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/staging/media/zoran/zoran_device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.12","status":"affected"},{"version":"5.10","status":"affected"},{"version":"0","lessThan":"2.6.12","versionType":"semver","status":"unaffected"},{"version":"5.2","lessThan":"5.10","versionType":"semver","status":"unaffected"},{"version":"5.10.110","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.33","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"5.16.19","lessThanOrEqual":"5.16.*","versionType":"semver","status":"unaffected"},{"version":"5.17.2","lessThanOrEqual":"5.17.*","versionType":"semver","status":"unaffected"},{"version":"5.18","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
CVE Modified by CISA-ADP
10/01/2025 4:15:41 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added
CWE
CWE-476
CVE Modified by kernel.org
9/29/2025 8:15:45 AM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687
Initial Analysis by NIST
3/18/2025 3:09:58 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added
CWE
CWE-476
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.33
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.2
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.19
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.110
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/20811bbe685ca3eddd34b0c750860427d7030910 Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e Types: Patch
Added
Reference Type
kernel.org: https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 Types: Patch
New CVE Received from kernel.org
2/26/2025 1:37:06 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com
On the case tmp_dcim=1, the index of buffer is miscalculated.
This generate a NULL pointer dereference later.
So let's fix the calcul and add a check to prevent this to reappear.
Added
Reference
https://git.kernel.org/stable/c/20811bbe685ca3eddd34b0c750860427d7030910
Added
Reference
https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c
Added
Reference
https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52
Added
Reference
https://git.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e
Added
Reference
https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207
Quick Info
CVE Dictionary Entry: CVE-2021-47645 NVD
Published Date: 02/26/2025 NVD
Last Modified: 08/10/2026
Source: kernel.org
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