An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.4 · linux, opensuse, debianNVD modified 2026-10-08 21:17
Affected (CPE criteria) 8
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
References 26
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html Third Party Advisory, VDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200430-0004/ Third Party Advisory
- https://usn.ubuntu.com/4363-1/ Third Party Advisory
- https://usn.ubuntu.com/4364-1/ Third Party Advisory
- https://usn.ubuntu.com/4368-1/ Third Party Advisory
- https://usn.ubuntu.com/4369-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html Third Party Advisory, VDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200430-0004/ Third Party Advisory
- https://usn.ubuntu.com/4363-1/ Third Party Advisory
- https://usn.ubuntu.com/4364-1/ Third Party Advisory
- https://usn.ubuntu.com/4368-1/ Third Party Advisory
- https://usn.ubuntu.com/4369-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4698 Third Party Advisory