CVE-2023-53832
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
md/raid10: fix null-ptr-deref in raid10_sync_request
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")
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | 38d33593260536840b49fd1dcac9aedfd14a9d42 | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | 14964127be77884003976a392c9faa9ebaabbbe1 | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | bdbf104b1c91fbf38f82c522ebf75429f094292a | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | 68695084077e3de9d3e94e09238ace2b6f246446 | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | b50fd1c3d9d0175aa29ff2706ef36cc178bc356a | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | 99b503e4edc5938885d839cf0e7571963f75d800 | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | 9e9efc77efd1956cc244af975240f2513d78a371 | Unavailable | None listed |
| 7e83ccbecd608b971f340e951c9e84cd0343002f | affected | git | a405c6f0229526160aa3f177f65e20c86fce84c5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.10 | Unavailable | None listed |
| 4.19.283 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.243 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.180 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.111 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.28 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.15 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3.2 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4 | unaffected | original_commit_for_fix | Unavailable | * | None listed |