Unrated severityNVD Advisory· Published Jul 19, 2026· Updated Jul 30, 2026
CVE-2026-63991
CVE-2026-63991
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt()
The skb_clone() function can return NULL if memory allocation fails. send_mcast_pkt() calls skb_clone() without checking the return value, which can lead to a NULL pointer dereference in send_pkt() when it dereferences skb->data. Add a NULL check after skb_clone() and skip the peer if the clone fails.
Affected products
15- osv-coords14 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
>= 3.14.0, < 5.10.259+ 13 more
- (no CPE)range: >= 3.14.0, < 5.10.259
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/2061d080a013c0ec0a56162cd501fb36d2befc26nvd
- git.kernel.org/stable/c/3c40d381ce04f9575a5d8b542898183c3b4b38dcnvd
- git.kernel.org/stable/c/3d5d81d294ba09487c86bc4ba33dc4a4bec5d215nvd
- git.kernel.org/stable/c/9903a04becf059e44cccf625e23689b7d4378384nvd
- git.kernel.org/stable/c/9afcb5ea080af13aab37930da627db43bd277665nvd
- git.kernel.org/stable/c/b06203ac5f12929d79146bb9f063c2af1d679e63nvd
- git.kernel.org/stable/c/d630c4b25f36e0e68461561e4c70957ec37fdeddnvd
- git.kernel.org/stable/c/e673889a35a5e4c586d0fae67d8755ca4367d3e2nvd
News mentions
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