Unrated severityNVD Advisory· Published Apr 17, 2025· Updated May 4, 2025
can: dev: can_restart: fix use after free bug
CVE-2021-47668
Description
In the Linux kernel, the following vulnerability has been resolved:
can: dev: can_restart: fix use after free bug
After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the netif_rx_ni() in: stats->rx_bytes += cf->len;
Reordering the lines solves the issue.
Affected products
53- osv-coords51 versionspkg:rpm/suse/kernel-64kb&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_57&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-preempt&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-syms&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_68&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 5.3.18-150300.59.204.1+ 50 more
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1.150300.18.122.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 1-150300.7.3.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.208.1
- (no CPE)range: < 5.3.18-150300.208.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.208.1
- (no CPE)range: < 5.3.18-150300.208.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 5.3.18-150300.59.204.1
- (no CPE)range: < 1-8.3.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- git.kernel.org/stable/c/03f16c5075b22c8902d2af739969e878b0879c94mitre
- git.kernel.org/stable/c/08ab951787098ae0b6c0364aeea7a8138226f234mitre
- git.kernel.org/stable/c/260925a0b7d2da5449f8ecfd02c1405e0c8a45b8mitre
- git.kernel.org/stable/c/593c072b7b3c4d7044416eb039d9ad706bedd67amitre
- git.kernel.org/stable/c/92668d28c7e6a7a2ba07df287669ffcdf650c421mitre
- git.kernel.org/stable/c/ac48ef15826e83f4206c47add61072e8fc76d328mitre
- git.kernel.org/stable/c/bbc6847b9b8978b520f62fbc7c68c54ef0f8d282mitre
News mentions
0No linked articles in our index yet.