CVE-2026-90263
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: check if root is readonly when setting posix acl
In the Linux kernel, the following vulnerability has been resolved: btrfs: check if root is readonly when setting posix acl For a filesystem which has btrfs read-only property set to true, all write operations including acl and xattr should be denied. However, acl can still be set even if btrfs ro property is true. This happens because no function on the set_acl code path checks the root is readonly or not. It was checked in btrfs_setxattr_trans() but got removed in commit 353c2ea735e4 ("btrfs: remove redundant readonly root check in btrfs_setxattr_trans") That commit didn't check if all the callers properly check the root's read-only flag. A previous fix is commit b51111271b03 ("btrfs: check if root is readonly while setting security xattr"). Always check if the root is read-only before performing the set acl operation.
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) |
|---|---|---|---|---|---|
| 353c2ea735e4b54fb6250861e67b51b1bcb47198 | affected | git | 20b2c2f3316e82a76ae3358c0bd45824f50f3fd5 | Unavailable | None listed |
| 353c2ea735e4b54fb6250861e67b51b1bcb47198 | affected | git | dc3a6e90a0a6350a6d43fed9f005f54171809580 | Unavailable | None listed |
| 353c2ea735e4b54fb6250861e67b51b1bcb47198 | affected | git | ce8103676f4d4b13e1f087fcfb34f80774d30be2 | Unavailable | None listed |
| 353c2ea735e4b54fb6250861e67b51b1bcb47198 | affected | git | d5602f96ff1e266f069b4d0d94f441050e057e06 | Unavailable | None listed |
| 353c2ea735e4b54fb6250861e67b51b1bcb47198 | affected | git | 01c2f41fc441f75b3f9326443372faceb1cb6638 | 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) |
|---|---|---|---|---|---|
| 5.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.2 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.57 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |