CVE-2026-74735
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)
l2tp: fix tunnel and session refcount leak on seq_file release
In the Linux kernel, the following vulnerability has been resolved: l2tp: fix tunnel and session refcount leak on seq_file release In pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state (pd->tunnel and pd->session) is kept in seq_file private data to allow iteration across multiple read() system calls. However, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels before reading to end-of-file (EOF), any tunnel or session reference stored in pd->tunnel / pd->session is left un-dropped when seq_file private data is freed. Fix this by dropping any remaining pd->tunnel and pd->session references in pppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file.
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) |
|---|---|---|---|---|---|
| 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 | affected | git | bd897e414451fb34dfdf08b31899180e5ab7149b | Unavailable | None listed |
| 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 | affected | git | bdf83613781956cc39798ed08321f74ab0467f4d | Unavailable | None listed |
| 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 | affected | git | 8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500 | Unavailable | None listed |
| 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 | affected | git | ebe2774e956482dd3c70b8991f6f7654356339e6 | Unavailable | None listed |
| 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 | affected | git | 9006c116dd111d457bf5d074990210f70a4ad2c8 | Unavailable | None listed |
| f6104e9ae04462523c372928b1173766a771ef95 | affected | git | Unavailable | Unavailable | None listed |
| 7f8e401f9e612df2a95c1ef76217c00181389bb5 | affected | git | Unavailable | Unavailable | None listed |
| c712ed63e9b33d9a282fbd92ce25c64918c3129f | affected | git | Unavailable | Unavailable | None listed |
| 9a8863e8a8def9d88583cd9c60db38a008e6b8cf | affected | git | Unavailable | Unavailable | None listed |
| 3.16.60 | affected | semver | 3.17 | Unavailable | None listed |
| 4.16.6 | affected | semver | 4.17 | 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) |
|---|---|---|---|---|---|
| 4.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.17 | 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 |
| 7.1.10 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |