CVE-2026-72463
- Source
- https://cve.org/CVERecord?id=CVE-2026-72463
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72463.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72463
- Downstream
BELL (1)
DEBIAN (1)
SUSE (6)
- Related
- Published
- 2026-08-15T05:57:07Z
- Modified
- 2026-10-08T02:51:48Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- xfrm: Fix dev use-after-free in xfrm async resumption
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xfrm: Fix dev use-after-free in xfrm async resumption
xfrm async resumption hold skb->dev refcnt until after transport_finish. However, xfrm_rcv_cb may modify skb->dev to tunnel dev without taking device reference, such as vti_rcv_cb. The subsequent async resumption will decrement the tunnel device's reference count, which lead to uaf of tunnel dev and refcnt leak of orig dev as below:
unregister_netdevice: waiting for vti1 to become free. Usage count = -2
Stash the original skb->dev to fix refcnt imbalance. The new skb->dev set by xfrm_rcv_cb can race with device teardown. Extend rcu protection over xfrm_rcv_cb and transport_finish to prevent races.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72463.json" }- References
-
- https://git.kernel.org/stable/c/1acd93259b6be269e26be5d71c224bccd1f8352f
- https://git.kernel.org/stable/c/63a30015199912bd5055bead8001b1ae68a67cdb
- https://git.kernel.org/stable/c/8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff
- https://git.kernel.org/stable/c/fed4d3195a31125566876952ce66113ec1eb9008
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72463.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72463
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4236c30b437b80f673b9e08c8fae38b8d471ac9eFixedfed4d3195a31125566876952ce66113ec1eb9008
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0f451b43c88bf2b9c038b414be580efee42e031bFixed1acd93259b6be269e26be5d71c224bccd1f8352f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1c428b03840094410c5fb6a5db30640486bbbfcbFixed63a30015199912bd5055bead8001b1ae68a67cdbFixed8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.94Fixed6.12.112
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.18.23Fixed6.18.54
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.19.13Fixed6.20
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5002beda5cac69d522dc54da0d5d463ed9c963d2
Affected versions
v6.*
v6.12.100
v6.12.101
v6.12.102
v6.12.103
v6.12.104
v6.12.105
v6.12.106
v6.12.107
v6.12.108
v6.12.109
v6.12.110
v6.12.111
v6.12.94
v6.12.95
v6.12.96
v6.12.97
v6.12.98
v6.12.99
v6.18.23
v6.18.24
v6.18.25
v6.18.26
v6.18.27
v6.18.28
v6.18.29
v6.18.30
v6.18.31
v6.18.32
v6.18.33
v6.18.34
v6.18.35
v6.18.36
v6.18.37
v6.18.38
v6.18.39
v6.18.40
v6.18.41
v6.18.42
v6.18.43
v6.18.44
v6.18.45
v6.18.46
v6.18.47
v6.18.48
v6.18.49
v6.18.50
v6.18.51
v6.18.52
v6.18.53
v6.19.13
v6.19.14