Vulnerability-Lookup

FKIE_CVE-2026-43373

Vulnerability from fkie_nvd - Published: 2026-05-08 15:16 - Updated: 2026-05-15 15:16

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths 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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ncsi: fix skb leak in error paths\n\nEarly return paths in NCSI RX and AEN handlers fail to release\nthe received skb, resulting in a memory leak.\n\nSpecifically, ncsi_aen_handler() returns on invalid AEN packets\nwithout consuming the skb. Similarly, ncsi_rcv_rsp() exits early\nwhen failing to resolve the NCSI device, response handler, or\nrequest, leaving the skb unfreed."
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
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}

CVE-2026-43373 (GCVE-0-2026-43373)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-11 22:23

Title

net: ncsi: fix skb leak in error paths

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/9891d7f4f1ede473c…
https://git.kernel.org/stable/c/fef5aa6e3bcf3c805…
https://git.kernel.org/stable/c/81d6aee32f8f7bbc1…
https://git.kernel.org/stable/c/59962588197863d0d…
https://git.kernel.org/stable/c/553366c271479c0d5…
https://git.kernel.org/stable/c/b70c4e5e711931cdd…
https://git.kernel.org/stable/c/87138dde2d6937b12…
https://git.kernel.org/stable/c/5c3398a5426654161…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 9891d7f4f1ede473c54b49776ae07755083eef06 (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < fef5aa6e3bcf3c8053307642663a63b7362d7552 (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 59962588197863d0d746879f193905c0c6b3df49 (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 553366c271479c0d571dd1bb5d1bcde4747fb82e (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < b70c4e5e711931cdd56e6e905737b72f1e649189 (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 87138dde2d6937b12b967f28fe598a7d59000ae4 (git) Affected: 138635cc27c9737f940c3aa80912ff7a61c825af , < 5c3398a54266541610c8d0a7082e654e9ff3e259 (git)
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "programFiles": [
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43373

CVE-2026-43373 (GCVE-0-2026-43373)

Tags

Sightings

Nomenclature