CVE-2023-53559 (GCVE-0-2023-53559)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:17 – Updated: 2026-05-11 19:47
VLAI?
Title
ip_vti: fix potential slab-use-after-free in decode_session6
Summary
In the Linux kernel, the following vulnerability has been resolved: ip_vti: fix potential slab-use-after-free in decode_session6 When ip_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ip_vti device sends IPv6 packets. As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 82fb41c5de243e7dfa90f32ca58e35adaff56c1d (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 7dfe23659f3677c08a60a0056cda2d91a79c15ca (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < d34c30442d5e53a33cde79ca163320dbe2432cbd (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 0b4d69539fdea138af2befe08893850c89248068 (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < e1e04cc2ef2c0c0866c19f5627149a76c2baae32 (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 2b05bf5dc437f7891dd409a3eaf5058459391c7a (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 78e397a43e1c47321a4679cc49a6c4530bf820b9 (git)
Affected: f855691975bb06373a98711e4cfe2c224244b536 , < 6018a266279b1a75143c7c0804dd08a5fc4c3e0b (git)
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Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.14.324 , ≤ 4.14.* (semver)
Unaffected: 4.19.293 , ≤ 4.19.* (semver)
Unaffected: 5.4.255 , ≤ 5.4.* (semver)
Unaffected: 5.10.192 , ≤ 5.10.* (semver)
Unaffected: 5.15.128 , ≤ 5.15.* (semver)
Unaffected: 6.1.47 , ≤ 6.1.* (semver)
Unaffected: 6.4.12 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.