01 Record

CVE-2025-38488

smb: client: fix use-after-free in crypt_message when using async crypto

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

smb: client: fix use-after-free in crypt_message when using async crypto

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.71% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 53.5% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-30.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-07-28 11:21Z1 YR AGO

Last updated

2026-08-05 12:02Z2 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

29a833bc401784bebfe98bf87696098f59466ba912194a8265ff36f1c1c8a22f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux8f14a476abba13144df5434871a7225fd29af633 to < 5d047b12f86cc3b9fde1171c02d9bccf4dba0632, ef51c0d544b1518b35364480317ab6d3468f205d to < 6550b2bef095d0dd2d2c8390d2ea4c3837028833, bce966530fd5542bbb422cb45ecb775f7a1a6bc3 to < 9a1d3e8d40f151c2d5a5f40c410e6e433f62f438, 0809fb86ad13b29e1d6d491364fc7ea4fb545995 to < 15a0a5de49507062bc3be4014a403d8cea5533de, b0abcd65ec545701b8793e12bc27dc98042b151a to < 2a76bc2b24ed889a689fb1c9015307bf16aafb5b, b0abcd65ec545701b8793e12bc27dc98042b151a to < 8ac90f6824fc44d2e55a82503ddfc95defb19ae0, b0abcd65ec545701b8793e12bc27dc98042b151a to < b220bed63330c0e1733dc06ea8e75d5b9962b6b6, 538c26d9bf70c90edc460d18c81008a4e555925a, 5.10.237 to < 5.10.241, 5.15.181 to < 5.15.190, 6.1.128 to < 6.1.147, 6.6.57 to < 6.6.100, 6.11.4 to < 6.12, 6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/5d047b12f86cc3b9fde1171c02d9bccf4dba0632
git.kernel.orghttps://git.kernel.org/stable/c/6550b2bef095d0dd2d2c8390d2ea4c3837028833
git.kernel.orghttps://git.kernel.org/stable/c/9a1d3e8d40f151c2d5a5f40c410e6e433f62f438
git.kernel.orghttps://git.kernel.org/stable/c/15a0a5de49507062bc3be4014a403d8cea5533de
git.kernel.orghttps://git.kernel.org/stable/c/2a76bc2b24ed889a689fb1c9015307bf16aafb5b
git.kernel.orghttps://git.kernel.org/stable/c/8ac90f6824fc44d2e55a82503ddfc95defb19ae0
git.kernel.orghttps://git.kernel.org/stable/c/b220bed63330c0e1733dc06ea8e75d5b9962b6b6
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.147-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.41-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.16.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.