01 Record

CVE-2024-50047

smb: client: fix UAF in async decryption

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

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02 Description

smb: client: fix UAF in async decryption

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.0% 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 2026-08-04.

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

2024-10-21 19:39Z2 YR AGO

Last updated

2026-08-05 11:41Z2 MO AGO

Reserved

2024-10-21

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

Data version

5.2

Document digest

9fb0d66a623d32d1d1e27c9a484eace8924df72b2f265afa83aae83c06129fd0

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux35cf94a397280b9e27576ac1480f631bdd3e7b70 to < 8f14a476abba13144df5434871a7225fd29af633, 35cf94a397280b9e27576ac1480f631bdd3e7b70 to < ef51c0d544b1518b35364480317ab6d3468f205d, 35cf94a397280b9e27576ac1480f631bdd3e7b70 to < bce966530fd5542bbb422cb45ecb775f7a1a6bc3, 35cf94a397280b9e27576ac1480f631bdd3e7b70 to < 0809fb86ad13b29e1d6d491364fc7ea4fb545995, 35cf94a397280b9e27576ac1480f631bdd3e7b70 to < 538c26d9bf70c90edc460d18c81008a4e555925a, 35cf94a397280b9e27576ac1480f631bdd3e7b70 to < b0abcd65ec545701b8793e12bc27dc98042b151a, 5.4—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8f14a476abba13144df5434871a7225fd29af633
git.kernel.orghttps://git.kernel.org/stable/c/ef51c0d544b1518b35364480317ab6d3468f205d
git.kernel.orghttps://git.kernel.org/stable/c/bce966530fd5542bbb422cb45ecb775f7a1a6bc3
git.kernel.orghttps://git.kernel.org/stable/c/0809fb86ad13b29e1d6d491364fc7ea4fb545995
git.kernel.orghttps://git.kernel.org/stable/c/538c26d9bf70c90edc460d18c81008a4e555925a
git.kernel.orghttps://git.kernel.org/stable/c/b0abcd65ec545701b8793e12bc27dc98042b151a
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.128-1

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

Debian 13

linux
Fixed in 6.11.4-1

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

Debian 14

linux
Fixed in 6.11.4-1

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