virtio-net: fix pages leaking when building skb in big mode
Published May 21, 2024
5.5
MEDIUMCVSS 3.1
EPSS 0.23%
Description
We try to use build_skb() if we had sufficient tailroom. But we forget to release the unused pages chained via private in big mode which will leak pages. Fixing this by release the pages after building the skb in big mode.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 5.13StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<5.13
- Version 5.14.9StatusunaffectedConstraints<=5.14.*
- Version 5.15StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- ≥ 5.13 · < 5.14.9
- 5.15
- 5.15
-
- Version 5.13StatusaffectedConstraints-
- Version
-
- Version fb32856b16adStatusaffectedConstraints<afd92d82c9d7
- Version fb32856b16adStatusaffectedConstraints<f020bb63b5d2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux Kernel | n/a |
| |||||||||
| Linux | Linux Kernel | n/a |
|
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel-rt
Out of support scope
Red Hat Enterprise Linux 8
kernel
Fix deferred
Red Hat Enterprise Linux 8
kernel-rt
Affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (8)
- https://access.redhat.com/security/cve/CVE-2021-47367 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2282379 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-34372 Advisory
- https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a Patch
- https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba Patch
- https://lore.kernel.org/linux-cve-announce/2024052139-CVE-2021-47367-f587@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2021-47367
- https://www.cve.org/CVERecord?id=CVE-2021-47367
Change history (0)
No recorded changes yet.