CVE-2021-47495
Description
In the Linux kernel, the following vulnerability has been resolved: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2021-47495 NameCVE-2021-47495 DescriptionIn the Linux kernel, the following vulnerability has been resolved: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub…
CVE-2021-47495
| Name | CVE-2021-47495 |
| Description | In the Linux kernel, the following vulnerability has been resolved: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.257-1 | fixed | |
| bookworm | 6.1.170-3 | fixed | |
| bookworm (security) | 6.1.172-1 | fixed | |
| trixie | 6.12.86-1 | fixed | |
| trixie (security) | 6.12.90-1 | fixed | |
| forky | 7.0.9-1 | fixed | |
| sid | 7.0.10-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | buster | 4.19.232-1 | |||
| linux | source | bullseye | 5.10.84-1 | |||
| linux | source | (unstable) | 5.14.16-1 |
Notes
https://git.kernel.org/linus/397430b50a363d8b7bdda00522123f82df6adc5e (5.15-rc7)
Apply commands
https://git.kernel.org/linus/397430b50a363d8b7bdda00522123f82df6adc5e (5.15-rc7)OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 5.14.16-1 |
| debian | bullseye | fixed | 5.10.84-1 |
| debian | forky | fixed | 5.14.16-1 |
| debian | sid | fixed | 5.14.16-1 |
| debian | trixie | fixed | 5.14.16-1 |
| almalinux | 8 | fixed | kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10.x86_64.rpm |
References
- https://access.redhat.com/errata/RHSA-2024:9315
- https://errata.rockylinux.org/RXSA-2024:4211
- https://errata.rockylinux.org/RLSA-2024:4352
- https://errata.rockylinux.org/RLSA-2024:4211
- https://www.suse.com/security/cve/CVE-2021-47495.html
- https://security-tracker.debian.org/tracker/CVE-2021-47495
- https://access.redhat.com/errata/RHSA-2024:4211
- https://bugzilla.redhat.com/1918601
- https://bugzilla.redhat.com/2248122
- https://bugzilla.redhat.com/2258875
- https://bugzilla.redhat.com/2265517
- https://bugzilla.redhat.com/2265519
- https://bugzilla.redhat.com/2265520
- https://bugzilla.redhat.com/2265800
- https://bugzilla.redhat.com/2266408
- https://bugzilla.redhat.com/2266831
- https://bugzilla.redhat.com/2267513
- https://bugzilla.redhat.com/2267518
- https://bugzilla.redhat.com/2267730
- https://bugzilla.redhat.com/2270093
- https://bugzilla.redhat.com/2271680
- https://bugzilla.redhat.com/2272692
- https://bugzilla.redhat.com/2272829
- https://bugzilla.redhat.com/2273204
- https://bugzilla.redhat.com/2273278
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Verify integrity in audit chain (admin only). AS-IS.