CVE-2025-40278
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)
net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak
In the Linux kernel, the following vulnerability has been resolved: net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak Fix a KMSAN kernel-infoleak detected by the syzbot . [net?] KMSAN: kernel-infoleak in __skb_datagram_iter In tcf_ife_dump(), the variable 'opt' was partially initialized using a designatied initializer. While the padding bytes are reamined uninitialized. nla_put() copies the entire structure into a netlink message, these uninitialized bytes leaked to userspace. Initialize the structure with memset before assigning its fields to ensure all members and padding are cleared prior to beign copied. This change silences the KMSAN report and prevents potential information leaks from the kernel memory. This fix has been tested and validated by syzbot. This patch closes the bug reported at the following syzkaller link and ensures no infoleak.
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) |
|---|---|---|---|---|---|
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | 918e063304f945fb93be9bb70cacea07d0b730ea | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | 5e3644ef147bf7140259dfa4cace680c9b26fe8b | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | 37f0680887c5aeba9a433fe04b35169010568bb1 | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | 2191662058443e0bcc28d11694293d8339af6dde | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | a676a296af65d33725bdf7396803180957dbd92e | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | d1dbbbe839647486c9b893e5011fe84a052962df | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | c8f51dad94cbb88054e2aacc272b3ce1ed11fb1e | Unavailable | None listed |
| ef6980b6becb1afd9d82a4f043749a10ae81bf14 | affected | git | ce50039be49eea9b4cd8873ca6eccded1b4a130a | 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) |
|---|---|---|---|---|---|
| 4.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.6 | Unavailable | None listed |
| 5.4.302 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.247 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.197 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.159 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.117 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.59 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.17.9 | unaffected | semver | Unavailable | 6.17.* | None listed |
| 6.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |