CVE-2026-31663
- Source
- https://cve.org/CVERecord?id=CVE-2026-31663
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31663.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31663
- Downstream
AZL (1)
BELL (1)
DEBIAN (1)
ECHO (1)
OESA (2)
openSUSE (1)
RHSA (12)
ROOT (5)
SUSE (11)
- Related
- Published
- 2026-04-24T14:45:13Z
- Modified
- 2026-10-17T02:30:44Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- xfrm: hold dev ref until after transport_finish NF_HOOK
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xfrm: hold dev ref until after transport_finish NF_HOOK
After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is then used inside NF_HOOK and its okfn, which can race with device teardown.
Remove the dev_put from the async resumption entry and instead drop the reference after the NF_HOOK call in transport_finish, using a saved device pointer since NF_HOOK may consume the skb. This covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip the okfn.
For non-transport exits (decaps, gro, drop) and secondary async return points, release the reference inline when async is set.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31663.json" }- References
-
- https://git.kernel.org/stable/c/0f451b43c88bf2b9c038b414be580efee42e031b
- https://git.kernel.org/stable/c/1c428b03840094410c5fb6a5db30640486bbbfcb
- https://git.kernel.org/stable/c/4236c30b437b80f673b9e08c8fae38b8d471ac9e
- https://git.kernel.org/stable/c/5002beda5cac69d522dc54da0d5d463ed9c963d2
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31663.json
- https://access.redhat.com/errata/RHSA-2026:67471
- https://access.redhat.com/errata/RHSA-2026:68531
- https://access.redhat.com/errata/RHSA-2026:68532
- https://access.redhat.com/errata/RHSA-2026:68570
- https://access.redhat.com/security/cve/CVE-2026-31663
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31663.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-31663
- https://bugzilla.redhat.com/show_bug.cgi?id=2461462
- 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
-
Introducedacf568ee859f098279eadf551612f103afdacb4eFixed4236c30b437b80f673b9e08c8fae38b8d471ac9eFixed0f451b43c88bf2b9c038b414be580efee42e031bFixed5002beda5cac69d522dc54da0d5d463ed9c963d2Fixed1c428b03840094410c5fb6a5db30640486bbbfcb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced3.2.100Fixed3.3
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced3.16.55Fixed3.17
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4.14.24Fixed4.15
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced69895c5ea0ca2e8d7de1e6d36965d0ab9730787f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced833760100588acfb267dac4d6a02ab9931237739
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducede095ecaec6d94aa2156cceb98a85d409b51190f3
Affected versions
v3.*
v3.16.55
v3.16.56
v3.16.57
v3.16.58
v3.16.59
v3.16.60
v3.16.61
v3.16.62
v3.16.63
v3.16.64
v3.16.65
v3.16.66
v3.16.67
v3.16.68
v3.16.69
v3.16.70
v3.16.71
v3.16.72
v3.16.73
v3.16.74
v3.16.75
v3.16.76
v3.16.77
v3.16.78
v3.16.79
v3.16.80
v3.16.81
v3.16.82
v3.16.83
v3.16.84
v3.16.85
v3.2.100
v3.2.101
v3.2.102
v4.*
v4.14.100
v4.14.101
v4.14.102
v4.14.103
v4.14.104
v4.14.105
v4.14.106
v4.14.107
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