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CVE-2024-40912

17
FAUCET Score

CVE-2024-40912 is a deadlock vulnerability in the Linux kernel's mac80211 WiFi subsystem. Specifically, the ieee80211_sta_ps_deliver_wakeup() function can deadlock when attempting to acquire the sta->ps_lock, as it doesn't properly prevent softirq execution on the same CPU. This medium-severity vulnerability (CVSS 5.5) has a local attack vector and low attack complexity, potentially leading to a denial of service (system stall). There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.14, < 4.19.317CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.297CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.221CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.162CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.95CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 58th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.22.1.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.33.1.el9_4
View patch
oraclevendor investigatingvia oracle_oval
Product: cpe:/a:oracle:linux:6:10:UEKR4_ELS
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (2)

redhatCVE-2024-40912Moderate

kernel: wifi: mac80211: Fix deadlock in ieee80211_sta_ps_deliver_wakeup()

Jul 12, 2024
oracleoval:com.oracle.ovmsa:def:20240016IMPORTANT

OVMSA-2024-0016: Unbreakable Enterprise kernel security update (IMPORTANT)

References

cert-portal.siemens.com / productcert/html/ssa-265688.html
cert-portal.siemens.com / productcert/html/ssa-355557.html
git.kernel.org / stable/c/28ba44d680a30c51cf485a2f5a3b680e66ed3932
Patch
git.kernel.org / stable/c/44c06bbde6443de206b30f513100b5670b23fc5e
Patch
git.kernel.org / stable/c/456bbb8a31e425177dc0e8d4f98728a560c20e81
Patch
git.kernel.org / stable/c/47d176755d5c0baf284eff039560f8c1ba0ea485
Patch
git.kernel.org / stable/c/9c49b58b9a2bed707e7638576e54c4bccd97b9eb
Patch
git.kernel.org / stable/c/d90bdff79f8e40adf889b5408bfcf521528b169f
Patch
git.kernel.org / stable/c/e51637e0c66a6f72d134d9f95daa47ea62b43c7e
Patch
git.kernel.org / stable/c/e7e916d693dcb5a297f40312600a82475f2e63bc
Patch
lists.debian.org / debian-lts-announce/2025/01/msg00001.html