CVE-2026-89789
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)
gtp: add synchronize_net() in gtp_newlink() error path to prevent use-after-free
In the Linux kernel, the following vulnerability has been resolved: gtp: add synchronize_net() in gtp_newlink() error path to prevent use-after-free gtp_newlink()'s error path frees tid_hash and addr_hash without waiting for an RCU grace period after clearing sk_user_data. A concurrent gtp_encap_recv() in softirq may still hold the gtp_dev pointer obtained via rcu_dereference_sk_user_data() and access the freed memory. BUG: KASAN: slab-use-after-free in gtp0_pdp_find+0x1f6/0x200 (gtp.c:152) Call Trace: <IRQ> gtp0_pdp_find+0x1f6/0x200 gtp_encap_recv+0x527/0x24b0 udp_queue_rcv_one_skb+0x75f/0xc10 Add synchronize_net() before the kfree calls in out_hashtable, which covers all error paths from both gtp_encap_enable() and gtp_create_sockets().
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) |
|---|---|---|---|---|---|
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | fcafb2b1430824bae4258c01a439ec97ca0c6973 | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | 3ca3da5c305caa873ddb81e8c6b118143f6dd3d1 | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | 6f815c2fb6ab20385f81c353cdad0ea3b88132af | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | e3b9aa0773abd5d4ed90be41ce5306c146d5b09e | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | fd8396cfecbd904468c71362f08aaa25f96d5337 | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | 7677eb2cbf2cc7446de474c01a6b06277c0051e5 | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | 8d85498016a5bb56339734a14c276209fa65bafc | Unavailable | None listed |
| 459aa660eb1d8ce67080da1983bb81d716aa5a69 | affected | git | d989e22ae9802c52c56ad4284d0caf26696cf6ae | 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) |
|---|---|---|---|---|---|
| 4.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.7 | 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 |