CVE-2026-63991
- Source
- https://cve.org/CVERecord?id=CVE-2026-63991
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63991.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-63991
- Downstream
- Published
- 2026-07-19T14:56:11.824Z
- Modified
- 2026-07-21T03:47:31.704137227Z
- Summary
- Bluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: 6lowpan: check skbclone() return value in sendmcast_pkt()
The skbclone() function can return NULL if memory allocation fails. sendmcastpkt() calls skbclone() without checking the return value, which can lead to a NULL pointer dereference in sendpkt() when it dereferences skb->data. Add a NULL check after skbclone() and skip the peer if the clone fails.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63991.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/2061d080a013c0ec0a56162cd501fb36d2befc26
- https://git.kernel.org/stable/c/3c40d381ce04f9575a5d8b542898183c3b4b38dc
- https://git.kernel.org/stable/c/3d5d81d294ba09487c86bc4ba33dc4a4bec5d215
- https://git.kernel.org/stable/c/9903a04becf059e44cccf625e23689b7d4378384
- https://git.kernel.org/stable/c/9afcb5ea080af13aab37930da627db43bd277665
- https://git.kernel.org/stable/c/b06203ac5f12929d79146bb9f063c2af1d679e63
- https://git.kernel.org/stable/c/d630c4b25f36e0e68461561e4c70957ec37fdedd
- https://git.kernel.org/stable/c/e673889a35a5e4c586d0fae67d8755ca4367d3e2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63991.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-63991
- 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
-
Introduced18722c247023035b9e2e2a08a887adec2a9a6e49Fixed9afcb5ea080af13aab37930da627db43bd277665Fixed9903a04becf059e44cccf625e23689b7d4378384Fixedd630c4b25f36e0e68461561e4c70957ec37fdeddFixedb06203ac5f12929d79146bb9f063c2af1d679e63Fixed3d5d81d294ba09487c86bc4ba33dc4a4bec5d215Fixede673889a35a5e4c586d0fae67d8755ca4367d3e2Fixed2061d080a013c0ec0a56162cd501fb36d2befc26Fixed3c40d381ce04f9575a5d8b542898183c3b4b38dc
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced3.14.0Fixed5.10.259
- Type
- ECOSYSTEM
- Events
-
Introduced5.11.0Fixed5.15.210
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.176
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.143
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.93
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.35
- Type
- ECOSYSTEM
- Events
-
Introduced6.19.0Fixed7.0.12