CVE-2023-53307
CVE-2023-53307 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-59954
- Weakness: CWE-416
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails If getting an ID or setting up a work queue in rbd_dev_create() fails, use-after-free on rbd_dev->rbd_client, rbd_dev->spec and rbd_dev->opts is triggered in do_rbd_add(). The root cause is that the ownership of these structures is transfered to rbd_dev prematurely and they all end up getting freed when rbd_dev_create() calls rbd_dev_free() prior to returning to do_rbd_add(). Found by Linux Verification Center (linuxtesting.org) with SVACE, an incomplete patch submitted by Natalia Petrova <[email protected]>.
Frequently asked questions
- What is CVE-2023-53307?
- In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails If getting an ID or setting up a work queue in rbd_dev_create() fails, use-after-free on rbd_dev->rbd_client, rbd_dev->spec and rbd_dev->opts is triggered in do_rbd_add(). The root cause is that the ownership of these structures is transfered to rbd_dev prematurely and they all end up getting freed when rbd_dev_create() calls rbd_dev_free() prior to returning to do_rbd_add(). Found by Linux Verification Center (linuxtesting.org) with SVACE, an incomplete patch submitted by Natalia Petrova <[email protected]>.
- How severe is CVE-2023-53307?
- CVE-2023-53307 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-53307 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-53307?
- CVE-2023-53307 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-53307?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2023-53307 have an EU (EUVD) identifier?
- Yes. CVE-2023-53307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59954.
- When was CVE-2023-53307 published?
- CVE-2023-53307 was published on 2025-09-16 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/71da2a151ed1adb0aea4252b16d81b53012e7afd
- https://git.kernel.org/stable/c/9787b328c42c13c4f31e7d5042c4e877e9344068
- https://git.kernel.org/stable/c/a73783e4e0c4d1507794da211eeca75498544dff
- https://git.kernel.org/stable/c/ae16346078b1189aee934afd872d9f3d0a682c33
- https://git.kernel.org/stable/c/cc8c0dd2984503ed09efa37bcafcef3d3da104e8
- https://git.kernel.org/stable/c/e3cbb4d60764295992c95344f2d779439e8b34ce
- https://git.kernel.org/stable/c/f7c4d9b133c7a04ca619355574e96b6abf209fba
- https://git.kernel.org/stable/c/faa7b683e436664fff5648426950718277831348
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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