CVE-2023-53189ipv6/addrconf: fix a potential refcount underflow for idev
- 7.8HighCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < c6395e32935d35e6f935e7caf1c2dac5a95943b4
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < df62fdcd004afa72ecbed0e862ebb983acd3aa57
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < c7eeba47058532f6077d6a658e38b6698f6ae71a
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < 2ad31ce40e8182860b631e37209e93e543790b7c
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < 82abd1c37d3bf2a2658b34772c17a25a6f9cca42
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < 436b7cc7eae7851c184b671ed7a4a64c750b86f7
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < 1f656e483eb4733d62f18dfb206a49b78f60f495
- affected b7b1bfce0bb68bd8f6e62a28295922785cc63781 – < 06a0716949c22e2aefb648526580671197151acc
- affected 973d5956f754cfc306f5e274d71503498f4b0324
- affected 3.10.105 – < 3.11
- affected 3.11
- unaffected < 3.11
- unaffected 4.14.322 – ≤ 4.14.*
- unaffected 4.19.291 – ≤ 4.19.*
- unaffected 5.4.251 – ≤ 5.4.*
- unaffected 5.10.188 – ≤ 5.10.*
- unaffected 5.15.121 – ≤ 5.15.*
- unaffected 6.1.40 – ≤ 6.1.*
- unaffected 6.4.5 – ≤ 6.4.*
- unaffected 6.5 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c6395e32935d35e6f935e7caf1c2dac5a95943b4 (opens in a new tab)
- https://git.kernel.org/stable/c/df62fdcd004afa72ecbed0e862ebb983acd3aa57 (opens in a new tab)
- https://git.kernel.org/stable/c/c7eeba47058532f6077d6a658e38b6698f6ae71a (opens in a new tab)
- https://git.kernel.org/stable/c/2ad31ce40e8182860b631e37209e93e543790b7c (opens in a new tab)
- https://git.kernel.org/stable/c/82abd1c37d3bf2a2658b34772c17a25a6f9cca42 (opens in a new tab)
- https://git.kernel.org/stable/c/436b7cc7eae7851c184b671ed7a4a64c750b86f7 (opens in a new tab)
- https://git.kernel.org/stable/c/1f656e483eb4733d62f18dfb206a49b78f60f495 (opens in a new tab)
- https://git.kernel.org/stable/c/06a0716949c22e2aefb648526580671197151acc (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-59787 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-53189)Record last updated .