01 Record

CVE-2024-49889

ext4: avoid use-after-free in ext4_ext_show_leaf()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

ext4: avoid use-after-free in ext4_ext_show_leaf()

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 17.1% 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 2026-10-15.

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 18:01Z2 YR AGO

Last updated

2026-10-15 00:53Z14 DAYS AGO

Reserved

2024-10-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

c20f5c3f9931062c302cd74689f27517b57c0459be031abc293655eb25a8cdf4

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxdfe5080939ea4686b3414b5d970a9b26733c57a4 to < b0cb4561fc4284d04e69c8a66c8504928ab2484e, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < 4999fed877bb64e3e7f9ab9996de2ca983c41928, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < 2eba3b0cc5b8de624918d21f32b5b8db59a90b39, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < 34b2096380ba475771971a778a478661a791aa15, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < 8b114f2cc7dd5d36729d040b68432fbd0f0a8868, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < d483c7cc1796bd6a80e7b3a8fd494996260f6b67, dfe5080939ea4686b3414b5d970a9b26733c57a4 to < 4e2524ba2ca5f54bdbb9e5153bea00421ef653f5, 3.18—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/b0cb4561fc4284d04e69c8a66c8504928ab2484e
git.kernel.orghttps://git.kernel.org/stable/c/4999fed877bb64e3e7f9ab9996de2ca983c41928
git.kernel.orghttps://git.kernel.org/stable/c/2eba3b0cc5b8de624918d21f32b5b8db59a90b39
git.kernel.orghttps://git.kernel.org/stable/c/34b2096380ba475771971a778a478661a791aa15
git.kernel.orghttps://git.kernel.org/stable/c/8b114f2cc7dd5d36729d040b68432fbd0f0a8868
git.kernel.orghttps://git.kernel.org/stable/c/d483c7cc1796bd6a80e7b3a8fd494996260f6b67
git.kernel.orghttps://git.kernel.org/stable/c/4e2524ba2ca5f54bdbb9e5153bea00421ef653f5
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-355557.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.115-1

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.