CVE-2025-21844

smb: client: Add check for next_buffer in receive_encrypted_standard()

State: Published
Severity: 7.5 High
Published: Mar 12, 2025
Updated: Oct 15, 2026
Reserved: Dec 29, 2024

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	b03c8099a738a04d2343547ae6a04e5f0f63d3fa to before f277e479eea3d1aa18bc712abe1d2bf3dece2e30Affected 858e73ff25639a0cc1f6f8d2587b62c045867e41 to before f618aeb6cad2307e48a641379db610abcf593edfAffected 9f528a8e68327117837b5e28b096f52af4c26a05 to before 24e8e4523d3071bc5143b0db9127d511489f7b3bAffected 534733397da26de0303057ce0b93a22bda150365 to before 9e5d99a4cf2e23c716b44862975548415fae5391Affected eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bdAffected eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before 554736b583f529ee159aa95af9a0cbc12b5ffc96Affected eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before 860ca5e50f73c2a1cef7eefc9d39d04e275417f7Affected 5.10.211 to before 5.10.235Affected 5.15.150 to before 5.15.179Affected 6.1.69 to before 6.1.130Affected 6.6.8 to before 6.6.80Affected
LinuxLinux	6.7Affected before 6.7Not affected 5.10.235 through 5.10.Not affected 5.15.179 through 5.15.Not affected 6.1.130 through 6.1.Not affected 6.6.80 through 6.6.Not affected 6.12.17 through 6.12.Not affected 6.13.5 through 6.13.Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

b03c8099a738a04d2343547ae6a04e5f0f63d3fa to before f277e479eea3d1aa18bc712abe1d2bf3dece2e30Affected
858e73ff25639a0cc1f6f8d2587b62c045867e41 to before f618aeb6cad2307e48a641379db610abcf593edfAffected
9f528a8e68327117837b5e28b096f52af4c26a05 to before 24e8e4523d3071bc5143b0db9127d511489f7b3bAffected
534733397da26de0303057ce0b93a22bda150365 to before 9e5d99a4cf2e23c716b44862975548415fae5391Affected
eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bdAffected
eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before 554736b583f529ee159aa95af9a0cbc12b5ffc96Affected
eec04ea119691e65227a97ce53c0da6b9b74b0b7 to before 860ca5e50f73c2a1cef7eefc9d39d04e275417f7Affected
5.10.211 to before 5.10.235Affected
5.15.150 to before 5.15.179Affected
6.1.69 to before 6.1.130Affected
6.6.8 to before 6.6.80Affected

LinuxLinux

6.7Affected
before 6.7Not affected
5.10.235 through 5.10.*Not affected
5.15.179 through 5.15.*Not affected
6.1.130 through 6.1.*Not affected
6.6.80 through 6.6.*Not affected
6.12.17 through 6.12.*Not affected
6.13.5 through 6.13.*Not affected
6.14 and laterNot affected

References

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