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CVE-2022-49637 (GCVE-0-2022-49637)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:03
VLAI
Title
ipv4: Fix a data-race around sysctl_fib_sync_mem.
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix a data-race around sysctl_fib_sync_mem. While reading sysctl_fib_sync_mem, it can be changed concurrently. So, we need to add READ_ONCE() to avoid a data-race.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:34 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9ab948a91b2c2abc8e82845c0e61f4b1683e3a4f , < 7c1acd98fb221dc0d847451b9ab86319f8b9916c (git)
Affected: 9ab948a91b2c2abc8e82845c0e61f4b1683e3a4f , < 418b191d5f223a8cb6cab09eae1f72c04ba6adf2 (git)
Affected: 9ab948a91b2c2abc8e82845c0e61f4b1683e3a4f , < 9be8aac91960ea32fd0e874758c9afee665c57d2 (git)
Affected: 9ab948a91b2c2abc8e82845c0e61f4b1683e3a4f , < 190cd4ff128373271e065afb20f1d2247b3f10c3 (git)
Affected: 9ab948a91b2c2abc8e82845c0e61f4b1683e3a4f , < 73318c4b7dbd0e781aaababff17376b2894745c0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.207 , ≤ 5.4.* (semver)
Unaffected: 5.10.132 , ≤ 5.10.* (semver)
Unaffected: 5.15.56 , ≤ 5.15.* (semver)
Unaffected: 5.18.13 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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    "redhat_vex": {
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      "cve": "CVE-2022-49637",
      "id": "CVE-2022-49637",
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      "product_status:fixed": "201",
      "product_status:known_affected": "50",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipv4: Fix a data-race around sysctl_fib_sync_mem.",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49637.json",
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      "cve": "CVE-2022-49637",
      "id": "CVE-2022-49637",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49637",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49637.json",
      "version": "17"
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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