CVE-2022-49808 Vulnerability Analysis & Exploit Details

CVE-2022-49808
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2022-49808 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2022-49808 Details

Status: Analyzed

Last updated: 🕖 07 Nov 2025, 19:20 UTC
Originally published on: 🕒 01 May 2025, 15:16 UTC

Time between publication and last update: 190 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2022-49808 Vulnerability Summary

CVE-2022-49808: In the Linux kernel, the following vulnerability has been resolved: net: dsa: don't leak tagger-owned storage on switch driver unbind In the initial commit dc452a471dba ("net: dsa: introduce tagger-owned storage for private and shared data"), we had a call to tag_ops->disconnect(dst) issued from dsa_tree_free(), which is called at tree teardown time. There were problems with connecting to a switch tree as a whole, so this got reworked to connecting to individual switches within the tree. In this process, tag_ops->disconnect(ds) was made to be called only from switch.c (cross-chip notifiers emitted as a result of dynamic tag proto changes), but the normal driver teardown code path wasn't replaced with anything. Solve this problem by adding a function that does the opposite of dsa_switch_setup_tag_protocol(), which is called from the equivalent spot in dsa_switch_teardown(). The positioning here also ensures that we won't have any use-after-free in tagging protocol (*rcv) ops, since the teardown sequence is as follows: dsa_tree_teardown -> dsa_tree_teardown_master -> dsa_master_teardown -> unsets master->dsa_ptr, making no further packets match the ETH_P_XDSA packet type handler -> dsa_tree_teardown_ports -> dsa_port_teardown -> dsa_slave_destroy -> unregisters DSA net devices, there is even a synchronize_net() in unregister_netdevice_many() -> dsa_tree_teardown_switches -> dsa_switch_teardown -> dsa_switch_teardown_tag_protocol -> finally frees the tagger-owned storage

Assessing the Risk of CVE-2022-49808

Access Complexity Graph

The exploitability of CVE-2022-49808 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-2022-49808

CVE-2022-49808 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

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-2022-49808, 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-2022-49808, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2022-49808 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2022-49808 poses no threat to data integrity.
  • Availability: High
    CVE-2022-49808 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2022-49808 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:o:linux:linux_kernel:5.17:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc8:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:rc8:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18.19:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18.19:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc9:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.18:rc9:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.19:rc8:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.19:rc8:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.0.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.0.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*

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