CVE-2026-53337
Vulnerability Scoring
Analysis In Progress
CVE-2026-53337 Vulnerability Analysis & Exploit Details
CVE-2026-53337
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-53337 Details
Status: Awaiting Analysis
Last updated: 🕒 14 Jul 2026, 15:26 UTC
Originally published on: 🕑 01 Jul 2026, 14:16 UTC
Time between publication and last update: 13 days
CVSS Release:
CVE-2026-53337 Vulnerability Summary
CVE-2026-53337: In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix NULL pointer dereference in bond_do_ioctl() In bond_do_ioctl(), slave_dev is obtained via __dev_get_by_name() which can return NULL if the requested interface name does not exist. However, the subsequent slave_dbg() call is placed before the NULL check: slave_dev = __dev_get_by_name(net, ifr->ifr_slave); slave_dbg(bond_dev, slave_dev, "slave_dev=%p:\n", slave_dev); //here if (!slave_dev) return -ENODEV; The slave_dbg() macro expands to netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ...) which unconditionally dereferences slave_dev->name before the NULL check is performed. This results in a NULL pointer dereference kernel oops when a user calls bonding ioctl (e.g. SIOCBONDENSLAVE, SIOCBONDRELEASE, etc.) with a non-existent slave interface name. This is reachable from userspace via the bonding ioctl interface with CAP_NET_ADMIN capability, making it a potential local denial-of-service vector. Fix by moving the slave_dbg() call after the NULL check.
Assessing the Risk of CVE-2026-53337
Access Complexity Graph
The exploitability of CVE-2026-53337 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-53337
No exploitability data is available for CVE-2026-53337.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-53337, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-53337, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-53337 does not compromise confidentiality.
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Integrity:
None
CVE-2026-53337 does not impact data integrity.
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Availability:
None
CVE-2026-53337 does not affect system availability.
CVE-2026-53337 References
External References
- https://git.kernel.org/stable/c/1b7558c85493467b2ea20738866b822db6442034
- https://git.kernel.org/stable/c/66693957bacd1c9dae6188a7312d6be69a221f2d
- https://git.kernel.org/stable/c/a629418d463fb50d132a1aa063b0105857311e5f
- https://git.kernel.org/stable/c/a764b0e8317a863006e05732e1aefe821b9d8c2d
- https://git.kernel.org/stable/c/b02b2e3e876c18733b868a29064abd11cdbf8feb
- https://git.kernel.org/stable/c/b0878106ddc486375084145848ff255dedfff46a
- https://git.kernel.org/stable/c/bcb8fad90f27300add583a8371db504b766d95c7
- https://git.kernel.org/stable/c/c2cfe290fdb1c32a4f4eb2b8ca3f363b305d21ba
CWE Common Weakness Enumeration
Unknown
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