CVE-2025-40049
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Squashfs: fix uninit-value in squashfs_get_parent
In the Linux kernel, the following vulnerability has been resolved: Squashfs: fix uninit-value in squashfs_get_parent Syzkaller reports a "KMSAN: uninit-value in squashfs_get_parent" bug. This is caused by open_by_handle_at() being called with a file handle containing an invalid parent inode number. In particular the inode number is that of a symbolic link, rather than a directory. Squashfs_get_parent() gets called with that symbolic link inode, and accesses the parent member field. unsigned int parent_ino = squashfs_i(inode)->parent; Because non-directory inodes in Squashfs do not have a parent value, this is uninitialised, and this causes an uninitialised value access. The fix is to initialise parent with the invalid inode 0, which will cause an EINVAL error to be returned. Regular inodes used to share the parent field with the block_list_start field. This is removed in this commit to enable the parent field to contain the invalid inode number 0.
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) |
|---|---|---|---|---|---|
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | f81a5bc9e924ee1950e0dd82bd10749048390f6e | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 382a47fae449e554ef1e8c198667fd2f3270b945 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 61d38b5ce2782bff3cacaacbb8164087a73ed1a5 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 81a2bca52d43fc9d9abf07408b91255131c5dc53 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | c28b0ca029edf5d0558abcd76cb8c732706cd339 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 1b3ccd0019132880c94bb00ca7088c1749308f82 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 91b99db7a92e57ff48a96a1b10fddfd2547e7f53 | Unavailable | None listed |
| 122601408d20c77704268f1dea9f9ce4abf997c2 | affected | git | 74058c0a9fc8b2b4d5f4a0ef7ee2cfa66a9e49cf | 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) |
|---|---|---|---|---|---|
| 2.6.29 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.29 | Unavailable | None listed |
| 5.4.301 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.246 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.195 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.156 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.112 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.53 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.17.3 | unaffected | semver | Unavailable | 6.17.* | None listed |
| 6.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |