CVE-2024-49997
Linux Kernel 3.0 – 5.10.227
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSummary
CVE-2024-49997 is a high-severity Improper Removal of Sensitive Information Before Storage or Transfer (CWE-212) vulnerability in Linux Linux Kernel. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Unsecured Credentials (T1552); ranked in the top 38% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to MP-6 (Media Sanitization) and SI-19 (De-identification) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-43671
Vulnerability Data
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses…
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skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 5 hardening rules · 3 OS baselines
V14.2.8V14.3.3
Mitigating Controls (NIST 800-53 r5) AI
Requires sanitization of media before disposal, release, or reuse, directly stopping sensitive information from remaining in resources made available to unauthorized parties.
Mandates removal of specified PII elements from datasets before further use or sharing, addressing a subset of the improper-removal cases.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Directly addresses removal of confidential data from process memory and similar in-use contexts before exposure.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Explicit information-deletion control directly addresses improper removal of sensitive data.
Data-masking techniques can substitute for removal when full deletion is impractical.
Test-data protection rules require sanitization of production data used in testing.
Classification identifies sensitive data that must be removed before storage or transfer.
Information-transfer rules can require sanitization of sensitive content before sharing.
PII-protection requirements include removing identifiers before storage or disclosure.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Oracle Linux 8 (3 rules)
- V-248579 OL 8 must restrict access to the kernel message buffer. prevents CWE-212
- V-248580 OL 8 must prevent kernel profiling by unprivileged users. prevents CWE-212
- V-248551 A sticky bit must be set on all OL 8 public directories to prevent unauthorized and unintended information transferred via shared system resources. prevents CWE-212
Oracle Linux 9 (1 rule)
- V-271745 OL 9 must restrict access to the kernel message buffer. prevents CWE-212
RHEL 8 (1 rule)
- V-230269 RHEL 8 must restrict access to the kernel message buffer. prevents CWE-212