net: ncsi: fix skb leak in error paths
Published May 8, 2026
7.5
HIGHCVSS 3.1
EPSS 0.72%
Description
Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak.
Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 4.8StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<4.8
- Version 5.10.253StatusunaffectedConstraints<=5.10.*
- Version 5.15.203StatusunaffectedConstraints<=5.15.*
- Version 6.1.167StatusunaffectedConstraints<=6.1.*
- Version 6.12.78StatusunaffectedConstraints<=6.12.*
- Version 6.18.19StatusunaffectedConstraints<=6.18.*
- Version 6.19.9StatusunaffectedConstraints<=6.19.*
- Version 6.6.130StatusunaffectedConstraints<=6.6.*
- Version 7.0StatusunaffectedConstraints<=*
- 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 | unaffected |
| |||||||||||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 4.8 · < 5.10.253
- ≥ 5.11 · < 5.15.203
- ≥ 5.16 · < 6.1.167
- ≥ 6.2 · < 6.6.130
- ≥ 6.7 · < 6.12.78
- ≥ 6.13 · < 6.18.19
- ≥ 6.19 · < 6.19.9
- 7.0
- 7.0
- 7.0
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not 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 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not 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 (13)
- https://access.redhat.com/security/cve/CVE-2026-43373 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2468197 Issue Tracking
- https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e Patch
- https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49 Patch
- https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259 Patch
- https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a Patch
- https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4 Patch
- https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06 Patch
- https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189 Patch
- https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552 Patch
- https://lore.kernel.org/linux-cve-announce/2026050830-CVE-2026-43373-2e8a@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-43373
- https://www.cve.org/CVERecord?id=CVE-2026-43373
Change history (0)
No recorded changes yet.