01 Record

CVE-2024-40947

ima: Avoid blocking in RCU read-side critical section

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

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02 Description

ima: Avoid blocking in RCU read-side critical section

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 17.8% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Low. 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

2024-07-12 12:31Z2 YR AGO

Last updated

2026-08-05 11:34Z2 MO AGO

Reserved

2024-07-12

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-476NULL Pointer DereferenceBase
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

2db0000655c40a4dc9ea2b946c0e7ec05dd456cffb86a99aefbdf6abb3026364

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxc4b035b1f036ddd53fbfced49046e586c5ad8a3e to < a6176a802c4bfb83bf7524591aa75f44a639a853, 2d4bc60693c4206c64723e94ae5f7a04c0b8f18f to < a38e02265c681b51997a264aaf743095e2ee400a, 8008f1691c15f353f5a53dc5d450b8262cb57421 to < 9c3906c3738562b1fedc6f1cfc81756a7cfefff0, c7423dbdbc9ecef7fff5239d144cad4b9887f4de to < 28d0ecc52f6c927d0e9ba70a4f2c1ea15453ee88, c7423dbdbc9ecef7fff5239d144cad4b9887f4de to < 58275455893066149e9f4df2223ab2fdbdc59f9c, c7423dbdbc9ecef7fff5239d144cad4b9887f4de to < 9a95c5bfbf02a0a7f5983280fe284a0ff0836c34, 38d48fd224036717fcb3437e7af1314f6ebcd2d0, 69c60b2a2dbb4887739d3a13297cc0dae3793f35, 5.10.163 to < 5.10.222, 5.15.86 to < 5.15.163, 6.1.2 to < 6.1.98, 5.4.229 to < 5.5, 6.0.16 to < 6.1, 6.2—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a6176a802c4bfb83bf7524591aa75f44a639a853
git.kernel.orghttps://git.kernel.org/stable/c/a38e02265c681b51997a264aaf743095e2ee400a
git.kernel.orghttps://git.kernel.org/stable/c/9c3906c3738562b1fedc6f1cfc81756a7cfefff0
git.kernel.orghttps://git.kernel.org/stable/c/28d0ecc52f6c927d0e9ba70a4f2c1ea15453ee88
git.kernel.orghttps://git.kernel.org/stable/c/58275455893066149e9f4df2223ab2fdbdc59f9c
git.kernel.orghttps://git.kernel.org/stable/c/9a95c5bfbf02a0a7f5983280fe284a0ff0836c34
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.99-1

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

Debian 13

linux
Fixed in 6.9.7-1

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

Debian 14

linux
Fixed in 6.9.7-1

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