CVE-2023-53832md/raid10: fix null-ptr-deref in raid10_sync_request
- —Not scoredno CVSS score yet
- 0.27%Exploitation in 30 daysEPSS · top 80% 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: md/raid10: fix null-ptr-deref in raid10_sync_request init_resync() inits mempool and sets conf->have_replacemnt at the beginning of sync, close_sync() frees the mempool when sync is completed. After [1] recovery might be skipped and init_resync() is called but close_sync() is not. null-ptr-deref occurs with r10bio->dev[i].repl_bio. The following is one way to reproduce the issue. 1) create a array, wait for resync to complete, mddev->recovery_cp is set to MaxSector. 2) recovery is woken and it is skipped. conf->have_replacement is set to 0 in init_resync(). close_sync() not called. 3) some io errors and rdev A is set to WantReplacement. 4) a new device is added and set to A's replacement. 5) recovery is woken, A have replacement, but conf->have_replacemnt is 0. r10bio->dev[i].repl_bio will not be alloced and null-ptr-deref occurs. Fix it by not calling init_resync() if recovery skipped. [1] commit 7e83ccbecd60 ("md/raid10: Allow skipping recovery when clean arrays are assembled")
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.27% · top 80% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < 38d33593260536840b49fd1dcac9aedfd14a9d42
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < 14964127be77884003976a392c9faa9ebaabbbe1
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < bdbf104b1c91fbf38f82c522ebf75429f094292a
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < 68695084077e3de9d3e94e09238ace2b6f246446
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < b50fd1c3d9d0175aa29ff2706ef36cc178bc356a
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < 99b503e4edc5938885d839cf0e7571963f75d800
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < 9e9efc77efd1956cc244af975240f2513d78a371
- affected 7e83ccbecd608b971f340e951c9e84cd0343002f – < a405c6f0229526160aa3f177f65e20c86fce84c5
- affected 3.10
- unaffected < 3.10
- unaffected 4.19.283 – ≤ 4.19.*
- unaffected 5.4.243 – ≤ 5.4.*
- unaffected 5.10.180 – ≤ 5.10.*
- unaffected 5.15.111 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References
References8
- https://git.kernel.org/stable/c/38d33593260536840b49fd1dcac9aedfd14a9d42 (opens in a new tab)
- https://git.kernel.org/stable/c/14964127be77884003976a392c9faa9ebaabbbe1 (opens in a new tab)
- https://git.kernel.org/stable/c/bdbf104b1c91fbf38f82c522ebf75429f094292a (opens in a new tab)
- https://git.kernel.org/stable/c/68695084077e3de9d3e94e09238ace2b6f246446 (opens in a new tab)
- https://git.kernel.org/stable/c/b50fd1c3d9d0175aa29ff2706ef36cc178bc356a (opens in a new tab)
- https://git.kernel.org/stable/c/99b503e4edc5938885d839cf0e7571963f75d800 (opens in a new tab)
- https://git.kernel.org/stable/c/9e9efc77efd1956cc244af975240f2513d78a371 (opens in a new tab)
- https://git.kernel.org/stable/c/a405c6f0229526160aa3f177f65e20c86fce84c5 (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-2023-60164 (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-2023-53832)Record last updated .