CVE-2026-98126
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)
smb/client: validate new EOF for zero range
In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for zero range When FALLOC_FL_ZERO_RANGE is used without FALLOC_FL_KEEP_SIZE, smb3_zero_range() may extend EOF without checking RLIMIT_FSIZE, allowing the file to grow beyond the caller's file-size limit. Fix this by calling inode_newsize_ok() before sending the zero-range request when the operation would extend EOF. Reproducer, using a file on a CIFS mount: bash -c ' FILE=/mnt/cifs/repro trap "" SIGXFSZ ulimit -f 3072 truncate -s 2M "$FILE" fallocate --zero-range -o 0 -l 4M "$FILE" echo "fallocate rc=$?" stat -c "file size=%s" "$FILE" ' Before this change, the operation succeeds despite the 3 MiB limit: fallocate rc=0 file size=4194304 After this change, fallocate fails and leaves the file at 2 MiB.
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) |
|---|---|---|---|---|---|
| 72c419d9b073628d3b5b0b2fc787b724f1a8c726 | affected | git | 5fbd8848f2e25c8163896ec52863df2305a3bb63 | Unavailable | None listed |
| 72c419d9b073628d3b5b0b2fc787b724f1a8c726 | affected | git | 3673f057b64abfa957e8ae84448db69369a5091a | Unavailable | None listed |
| 72c419d9b073628d3b5b0b2fc787b724f1a8c726 | affected | git | 06a4f9049cb6dc319bceec2dc813ba89add8b828 | Unavailable | None listed |
| 72c419d9b073628d3b5b0b2fc787b724f1a8c726 | affected | git | f320ca20c273a26cd779bdb2b2e4b076a95c76f6 | Unavailable | None listed |
| 72c419d9b073628d3b5b0b2fc787b724f1a8c726 | affected | git | 88972e35750792e717af287dc71f42a03b5cbce4 | 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) |
|---|---|---|---|---|---|
| 5.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.1 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.111 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.53 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.7 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |