CVE-2026-89839
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)
f2fs: use the mount idmap for the owner check in f2fs_xattr_advise_set()
In the Linux kernel, the following vulnerability has been resolved: f2fs: use the mount idmap for the owner check in f2fs_xattr_advise_set() f2fs_xattr_advise_set() calls inode_owner_or_capable() with &nop_mnt_idmap before allowing the "system.advise" xattr to be set, instead of the idmap that the VFS passes to the ->set() handler. f2fs supports idmapped mounts, so on such a mount this checks the caller's fsuid against the unmapped on-disk owner rather than the mapped owner: the actual owner can be wrongly denied with -EPERM and an unrelated caller wrongly allowed. Pass the handler's idmap instead.
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) |
|---|---|---|---|---|---|
| 01beba7957a26f9b7179127e8ad56bb5a0f56138 | affected | git | 4c0c610b480cfbc57528aa1acbd6be12ed2a6fb1 | Unavailable | None listed |
| 01beba7957a26f9b7179127e8ad56bb5a0f56138 | affected | git | c3e2692c7a58e0bdb84bd658d827e89dcecea3ad | Unavailable | None listed |
| 01beba7957a26f9b7179127e8ad56bb5a0f56138 | affected | git | 3b681229e9f8fb1dd29bc65983bf3c87779e4ca3 | Unavailable | None listed |
| 01beba7957a26f9b7179127e8ad56bb5a0f56138 | affected | git | ab31e3b774f5d06b4489cef6c297b48c47c9dcbd | Unavailable | None listed |
| 01beba7957a26f9b7179127e8ad56bb5a0f56138 | affected | git | a54ffce4637acb0db8e695188a6c7f99f14c3576 | 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) |
|---|---|---|---|---|---|
| 6.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.3 | Unavailable | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.51 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.5 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |