Security readout for executives and security teams
Plain-English summary
CVE-2022-50752 is a Linux kernel RAID5 bug that can double-free an I/O object when reading chunk-sized data from disks with bad blocks. The most likely business impact is system instability or crash on affected Linux systems using md/raid5. There is no source evidence of active exploitation.
Executive priority
Treat as a targeted stability risk for Linux RAID5 infrastructure, not a broad internet-facing emergency. Patch during normal or accelerated maintenance for storage-critical systems, especially where RAID errors or bad blocks are present.
Technical view
In md/raid5, raid5_read_one_chunk() kept an unnecessary bio_put() after bad-block checking was moved before bio_alloc_clone(). On the is_badblock() error path, the same bio can be released twice because common I/O completion also handles it. Kernel stable commits remove the extra bio_put().
Likely exposure
Exposure appears limited to Linux systems using software RAID5 via md/raid5, especially where disks have bad blocks and chunk-sized reads occur. Source data lists affected Linux versions including 5.14, 5.15.75, 5.19.17, 6.0.3, and 6.1, but packaging backports may vary by distribution.
Exploitation context
The provided sources describe a reliability and memory-management flaw triggered by a storage error path. They do not describe remote exploitation, privilege escalation, public exploit code, or active exploitation. CISA KEV status is false in the provided bundle.
Researcher notes
Evidence is from the CVE record and Linux stable commit references. No CVSS, CWE, exploitability assessment, or vendor-specific package matrix is included. The issue is tied to commit c82aa1b76787c and fixed by removing an unnecessary bio_put() in the bad-block path.
Mitigation direction
- Update affected Linux kernels to versions containing the referenced stable fixes.
- Prioritize systems using md/raid5 with known disk bad blocks or storage errors.
- Check Linux distribution advisories for backported fixes and package-specific guidance.
- Monitor RAID health and replace failing disks according to operational procedures.
Validation and detection
- Inventory hosts using Linux md/raid5 arrays.
- Check running kernel versions against vendor advisories and stable fix commits.
- Review logs for RAID5 bad-block, bio, slab, or double-free warnings.
- Confirm patched kernels are booted after maintenance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2022-50752 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/7a37c58ee72e1fadd22c4ee990cb74c2ca2280e7CVE reference
- https://git.kernel.org/stable/c/c0fd5d4d8fd7b1a50306d7a23c720cf808f41fdfCVE reference
- https://git.kernel.org/stable/c/21a9c7354aa59e97e26ece5f0a609c8bfa43020dCVE reference
- https://git.kernel.org/stable/c/c66a6f41e09ad386fd2cce22b9cded837bbbc704CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.