CVE-2025-21844
smb: client: Add check for next_buffer in receive_encrypted_standard()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get()
in receive_encrypted_standard() to prevent null pointer dereference.
In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper access control vulnerability. A nearby attacker could use this to connect a rougue device and possibly execute arbitrary code. It was discovered that the CIFS network file system implementation in the Linux kernel did not properly verify the target namespace when handling upcalls. An attacker could use this to expose sensitive information.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-12-29 CVE Reserved
- 2025-03-12 CVE Published
- 2025-11-03 CVE Updated
- 2026-01-06 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (14)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/b03c8099a738a04d2343547ae6a04e5f0f63d3fa | Vuln. Introduced | |
| https://git.kernel.org/stable/c/858e73ff25639a0cc1f6f8d2587b62c045867e41 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/9f528a8e68327117837b5e28b096f52af4c26a05 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/534733397da26de0303057ce0b93a22bda150365 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/eec04ea119691e65227a97ce53c0da6b9b74b0b7 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2025-21844 | 2025-11-11 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2351612 | 2025-11-11 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10.211 < 5.10.235 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.211 < 5.10.235" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.150 < 5.15.179 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.150 < 5.15.179" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1.69 < 6.1.130 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1.69 < 6.1.130" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.6.8 < 6.6.80 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6.8 < 6.6.80" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.7 < 6.12.17 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.12.17" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.7 < 6.13.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.13.5" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.7 < 6.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.14" | en |
Affected
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