CVE-2026-43359
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
btrfs: fix transaction abort on set received ioctl due to item overflow
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix transaction abort on set received ioctl due to item overflow If the set received ioctl fails due to an item overflow when attempting to add the BTRFS_UUID_KEY_RECEIVED_SUBVOL we have to abort the transaction since we did some metadata updates before. This means that if a user calls this ioctl with the same received UUID field for a lot of subvolumes, we will hit the overflow, trigger the transaction abort and turn the filesystem into RO mode. A malicious user could exploit this, and this ioctl does not even requires that a user has admin privileges (CAP_SYS_ADMIN), only that he/she owns the subvolume. Fix this by doing an early check for item overflow before starting a transaction. This is also race safe because we are holding the subvol_sem semaphore in exclusive (write) mode. A test case for fstests will follow soon.
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) |
|---|---|---|---|---|---|
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | b9914db13ac15aca3b74544c0bb1a2e0dad1f174 | Unavailable | None listed |
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | b19c0465e4daad5aa8f60552ea0578cf31a11b1e | Unavailable | None listed |
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | 2e57b8cac2ba0d38aac76c1ecdfd8b899e3581a5 | Unavailable | None listed |
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | d11aefe654a04fc41996d254748d6a38b6b0a7be | Unavailable | None listed |
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | 41fb97353ff58fa4f31904c343fc8e3df2f7517d | Unavailable | None listed |
| dd5f9615fc5c5e8d3751aab3a17b92768fb1ce70 | affected | git | 87f2c46003fce4d739138aab4af1942b1afdadac | 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) |
|---|---|---|---|---|---|
| 3.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.12 | Unavailable | None listed |
| 6.1.167 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.130 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.78 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.19 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.9 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |