CVE-2026-90203
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)
Squashfs: check block offset is not negative
In the Linux kernel, the following vulnerability has been resolved: Squashfs: check block offset is not negative If a negative offset is read off disk (for example the offset into the decompressed fragment block), this will cause squashfs_copy_data() to perform an out of bounds access. Fix by checking if offset is negative, and returning 0. This matches existing behaviour where an offset beyond the block returns 0 bytes copied. To trigger this out of bounds access requires a crafted Squashfs filesystem and CAP_SYS_ADMIN to mount it. Unprivileged users will not be able to mount such a filesystem, but once mounted, an unprivileged user can trigger the out of bounds access by reading the crafted file with the negative offset.
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) |
|---|---|---|---|---|---|
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | b169185d5c672b989985c6c2e38cafab2548ba88 | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | c2a126fca820ae74872da28de68dc74d4595dc4b | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | 95dadf366c117dcdca78a570e6832071deab1ecd | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | 3d2f0cb66c909ea2312cdef465165bb9a3ba2d84 | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | bbb2218eb072b0a15dc063929200183bd23c2344 | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | d0a3729d464fcf516416a41cf304c0c92126ee03 | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | e4afd90bc7bf3dd477970c6c42bdd29ad3fda7fe | Unavailable | None listed |
| f400e12656ab518be107febfe2315fb1eab5a342 | affected | git | e300eb5002925b29be803d2661af07266cfa267e | 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 |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | 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 |