CVE-2026-64534
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)
nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path In nvmet_tcp_try_recv_ddgst(), when a data digest mismatch is detected, nvmet_req_uninit() is called unconditionally. However, if the command arrived via the nvmet_tcp_handle_req_failure() path, nvmet_req_init() had returned false and percpu_ref_tryget_live() was never executed. The unconditional percpu_ref_put() inside nvmet_req_uninit() then causes a refcount underflow, leading to a WARNING in percpu_ref_switch_to_atomic_rcu, a use-after-free diagnostic, and eventually a permanent workqueue deadlock. Check cmd->flags & NVMET_TCP_F_INIT_FAILED before calling nvmet_req_uninit(), matching the existing pattern in nvmet_tcp_execute_request().
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) |
|---|---|---|---|---|---|
| 91edfca6f8b364d60cde3ddefaf7d03ddf35774b | affected | git | 22ec7a9fe9153d2737ee9b2fa6d2e43a1491decf | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | ba35b1c674ca3841c0dfadd698f2c1b3ec542d4e | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | c7874dad84b20433c0fe3919f291a762d40de08b | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | e602c93b25bda4a9d0ff1791a4bdbfdcbb074af1 | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | d306da8833e75f669d93424fd84940236f3850bc | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | 2ed3c9d955e8cd6361f130623baa664a75fb345f | Unavailable | None listed |
| fda871c0ba5d2eed2cd1c881573168129da70058 | affected | git | 4606467a75cfc16721937272ed29462a750b60c8 | Unavailable | None listed |
| 4b17476d809273617d3317fa0d4ae78aa488d760 | affected | git | Unavailable | Unavailable | None listed |
| 5.10.20 | affected | semver | 5.10.261 | Unavailable | None listed |
| 5.11.3 | affected | semver | 5.12 | 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) |
|---|---|---|---|---|---|
| 5.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.12 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |