CVE-2024-26844
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
block: Fix WARNING in _copy_from_iter
In the Linux kernel, the following vulnerability has been resolved: block: Fix WARNING in _copy_from_iter Syzkaller reports a warning in _copy_from_iter because an iov_iter is supposedly used in the wrong direction. The reason is that syzcaller managed to generate a request with a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs the kernel to copy user buffers into the kernel, read into the copied buffers and then copy the data back to user space. Thus the iovec is used in both directions. Detect this situation in the block layer and construct a new iterator with the correct direction for the copy-in.
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) |
|---|---|---|---|---|---|
| 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b | affected | git | 8fc80874103a5c20aebdc2401361aa01c817f75b | Unavailable | None listed |
| 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b | affected | git | 0f1bae071de9967602807472921829a54b2e5956 | Unavailable | None listed |
| 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b | affected | git | cbaf9be337f7da25742acfce325119e3395b1f1b | Unavailable | None listed |
| 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b | affected | git | 13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 | 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) |
|---|---|---|---|---|---|
| 4.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.0 | Unavailable | None listed |
| 6.1.80 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.19 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.7.7 | unaffected | semver | Unavailable | 6.7.* | None listed |
| 6.8 | unaffected | original_commit_for_fix | Unavailable | * | None listed |