CVE-2023-53189 (GCVE-0-2023-53189)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:05 – Updated: 2026-05-11 19:39
VLAI?
Title
ipv6/addrconf: fix a potential refcount underflow for idev
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether rs_timer is not pending. Then modify rs_timer timeout. There is a time gap in [1], during which if the pending rs_timer becomes not pending. It will miss to hold idev, but the rs_timer is activated. Thus rs_timer callback function addrconf_rs_timer() will be executed and put idev later without holding idev. A refcount underflow issue for idev can be caused by this. if (!timer_pending(&idev->rs_timer)) in6_dev_hold(idev); <--------------[1] mod_timer(&idev->rs_timer, jiffies + when); To fix the issue, hold idev if mod_timer() return 0.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < c6395e32935d35e6f935e7caf1c2dac5a95943b4 (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < df62fdcd004afa72ecbed0e862ebb983acd3aa57 (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < c7eeba47058532f6077d6a658e38b6698f6ae71a (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < 2ad31ce40e8182860b631e37209e93e543790b7c (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < 82abd1c37d3bf2a2658b34772c17a25a6f9cca42 (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < 436b7cc7eae7851c184b671ed7a4a64c750b86f7 (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < 1f656e483eb4733d62f18dfb206a49b78f60f495 (git)
Affected: b7b1bfce0bb68bd8f6e62a28295922785cc63781 , < 06a0716949c22e2aefb648526580671197151acc (git)
Affected: 973d5956f754cfc306f5e274d71503498f4b0324 (git)
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Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 4.14.322 , ≤ 4.14.* (semver)
Unaffected: 4.19.291 , ≤ 4.19.* (semver)
Unaffected: 5.4.251 , ≤ 5.4.* (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.40 , ≤ 6.1.* (semver)
Unaffected: 6.4.5 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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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.